darkcomet | 9b4ccdf21a6b12dcd13c38dd858ffd9758f94b0cf9440437281267c0571b4295

Analysis

max time kernel
156s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 03:36

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General

Target

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Size

346KB
MD5

18a3afb1be87d046b3a123c917ec65b7
SHA1

f8c05182e5a64ebb4deab1b50086853178365c00
SHA256

9b4ccdf21a6b12dcd13c38dd858ffd9758f94b0cf9440437281267c0571b4295
SHA512

de8c0c99fe7584e2998df99efd8c267965ccc2907650efdb5afd9aaddf405d1dc77dd01d77f3c88c667b30e93c6bd4d85edf683a600653b4116842c01f5bfeb6
SSDEEP

6144:lScwMXuUrtIHwfBbvGv8PC4iMhroCaBbuNqDFenq64WXy2w4gjvX1KIDJ2g:lSportIi7PC4iMXb4FiqjJP1zF

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

smr9.no-ip.org:1604

Mutex

DC_MUTEX-6G58T1Y

Attributes

InstallPath
MSDCSC\lsass.exe
gencode
49MpPfFc4FEb
install
true
offline_keylogger
false
password
123456
persistence
true
reg_key
lsass.exe

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\MSDCSC\\lsass.exe"	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation 18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Executes dropped EXE 2 IoCs

Processes:

lsass.exelsass.exe

pid process

3812 lsass.exe
4640 lsass.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

pid	process
3812	lsass.exe
4640	lsass.exe

UPX packed file 34 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2756-2-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-1-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-4-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-7-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-9-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-10-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-11-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2756-47-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-54-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-56-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-57-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-61-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-63-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-60-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-59-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-58-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-65-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-71-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4640-78-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exelsass.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass.exe = "C:\\MSDCSC\\lsass.exe"	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\lsass.exe = "C:\\MSDCSC\\lsass.exe"	lsass.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exelsass.exe

description	pid	process	target process
PID 2748 set thread context of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 3812 set thread context of 4640	3812	lsass.exe	lsass.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Modifies registry class 1 IoCs

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ 18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

lsass.exe

pid process

4640 lsass.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe

pid	process
4640	lsass.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exelsass.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeSecurityPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeBackupPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeRestorePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeShutdownPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeDebugPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeUndockPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: 33	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: 34	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: 35	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: 36	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4640	lsass.exe
Token: SeSecurityPrivilege	4640	lsass.exe
Token: SeTakeOwnershipPrivilege	4640	lsass.exe
Token: SeLoadDriverPrivilege	4640	lsass.exe
Token: SeSystemProfilePrivilege	4640	lsass.exe
Token: SeSystemtimePrivilege	4640	lsass.exe
Token: SeProfSingleProcessPrivilege	4640	lsass.exe
Token: SeIncBasePriorityPrivilege	4640	lsass.exe
Token: SeCreatePagefilePrivilege	4640	lsass.exe
Token: SeBackupPrivilege	4640	lsass.exe
Token: SeRestorePrivilege	4640	lsass.exe
Token: SeShutdownPrivilege	4640	lsass.exe
Token: SeDebugPrivilege	4640	lsass.exe
Token: SeSystemEnvironmentPrivilege	4640	lsass.exe
Token: SeChangeNotifyPrivilege	4640	lsass.exe
Token: SeRemoteShutdownPrivilege	4640	lsass.exe
Token: SeUndockPrivilege	4640	lsass.exe
Token: SeManageVolumePrivilege	4640	lsass.exe
Token: SeImpersonatePrivilege	4640	lsass.exe
Token: SeCreateGlobalPrivilege	4640	lsass.exe
Token: 33	4640	lsass.exe
Token: 34	4640	lsass.exe
Token: 35	4640	lsass.exe
Token: 36	4640	lsass.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exelsass.exe

description	pid	process	target process
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2748 wrote to memory of 2756	2748	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
PID 2756 wrote to memory of 3812	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	lsass.exe
PID 2756 wrote to memory of 3812	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	lsass.exe
PID 2756 wrote to memory of 3812	2756	18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe
PID 3812 wrote to memory of 4640	3812	lsass.exe	lsass.exe

C:\Users\Admin\AppData\Local\Temp\18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2748

C:\Users\Admin\AppData\Local\Temp\18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
C:\Users\Admin\AppData\Local\Temp\18a3afb1be87d046b3a123c917ec65b7_JaffaCakes118.exe
2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2756

C:\MSDCSC\lsass.exe
"C:\MSDCSC\lsass.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3812

C:\MSDCSC\lsass.exe
C:\MSDCSC\lsass.exe
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:4640

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4340 --field-trial-handle=2252,i,16022092570067181109,3235558581947505669,262144 --variations-seed-version /prefetch:8
1⤵
PID:4780

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\MSDCSC\lsass.exe
Filesize
346KB

MD5
18a3afb1be87d046b3a123c917ec65b7

SHA1
f8c05182e5a64ebb4deab1b50086853178365c00

SHA256
9b4ccdf21a6b12dcd13c38dd858ffd9758f94b0cf9440437281267c0571b4295

SHA512
de8c0c99fe7584e2998df99efd8c267965ccc2907650efdb5afd9aaddf405d1dc77dd01d77f3c88c667b30e93c6bd4d85edf683a600653b4116842c01f5bfeb6

Download Submit
memory/2748-5-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/2756-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-1-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-4-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-7-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-2-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-10-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2756-47-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3812-55-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/4640-60-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-57-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-61-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-63-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-54-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-58-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-65-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-56-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-71-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4640-78-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download