darkcomet | 35bc08c80902a5f572582183c9b89891cccf2a80b5527e9a00a573e30a0883bb

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
28-06-2024 05:49

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General

Target

19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
Size

865KB
MD5

19032a633afb59d6a619f5f9cc1158a2
SHA1

200eaa035a9caaf10cbbfb6a49208dd006babdf6
SHA256

35bc08c80902a5f572582183c9b89891cccf2a80b5527e9a00a573e30a0883bb
SHA512

82a77646c6b1171fcaa311a7408f4a1178cbb8b980c7f030beb6a58766642b68dfdefa0a00f426ce333b11ee7017702f83dacf391ac7b05baf498df2b27b27bd
SSDEEP

24576:HjmyKIeu4p0/h/2C/LCWWwwndeJNW24sbtv4SPJ:HjZKIeu4p0/52C/+WPwndcNW24sJv4SB

Score

10^/10

darkcomet skymike2dc_1337 persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Skymike2DC_1337

skymike2dc.no-ip.biz:1604

Mutex

DC_MUTEX-F2H6DRH

Attributes

gencode
lpra1CCJYwgT
install
false
offline_keylogger
true
persistence
false

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:

winini.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "expstart.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\winini.exe"	winini.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:

19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation 19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
Executes dropped EXE 2 IoCs

Processes:

winini.execvtres.exe

pid process

1784 winini.exe
4996 cvtres.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe

pid	process
1784	winini.exe
4996	cvtres.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

winini.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Live = "C:\\Users\\Admin\\AppData\\Local\\Temp\\winini.exe"	winini.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

winini.exe

description pid process target process

PID 1784 set thread context of 4996 1784 winini.exe cvtres.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

winini.exe

pid process

1784 winini.exe
1784 winini.exe

description	pid	process	target process
PID 1784 set thread context of 4996	1784	winini.exe	cvtres.exe

pid	process
1784	winini.exe
1784	winini.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

Processes:

cvtres.exewinini.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4996	cvtres.exe
Token: SeSecurityPrivilege	4996	cvtres.exe
Token: SeTakeOwnershipPrivilege	4996	cvtres.exe
Token: SeLoadDriverPrivilege	4996	cvtres.exe
Token: SeSystemProfilePrivilege	4996	cvtres.exe
Token: SeSystemtimePrivilege	4996	cvtres.exe
Token: SeProfSingleProcessPrivilege	4996	cvtres.exe
Token: SeIncBasePriorityPrivilege	4996	cvtres.exe
Token: SeCreatePagefilePrivilege	4996	cvtres.exe
Token: SeBackupPrivilege	4996	cvtres.exe
Token: SeRestorePrivilege	4996	cvtres.exe
Token: SeShutdownPrivilege	4996	cvtres.exe
Token: SeDebugPrivilege	4996	cvtres.exe
Token: SeSystemEnvironmentPrivilege	4996	cvtres.exe
Token: SeChangeNotifyPrivilege	4996	cvtres.exe
Token: SeRemoteShutdownPrivilege	4996	cvtres.exe
Token: SeUndockPrivilege	4996	cvtres.exe
Token: SeManageVolumePrivilege	4996	cvtres.exe
Token: SeImpersonatePrivilege	4996	cvtres.exe
Token: SeCreateGlobalPrivilege	4996	cvtres.exe
Token: 33	4996	cvtres.exe
Token: 34	4996	cvtres.exe
Token: 35	4996	cvtres.exe
Token: 36	4996	cvtres.exe
Token: SeDebugPrivilege	1784	winini.exe
Token: SeDebugPrivilege	1784	winini.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

cvtres.exe

pid process

4996 cvtres.exe

pid	process
4996	cvtres.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exewinini.exe

description	pid	process	target process
PID 1340 wrote to memory of 1784	1340	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 1340 wrote to memory of 1784	1340	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 1340 wrote to memory of 1784	1340	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe
PID 1784 wrote to memory of 4996	1784	winini.exe	cvtres.exe

C:\Users\Admin\AppData\Local\Temp\19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1340

C:\Users\Admin\AppData\Local\Temp\winini.exe
"C:\Users\Admin\AppData\Local\Temp\winini.exe"
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1784

C:\Users\Admin\AppData\Local\Temp\cvtres.exe
C:\Users\Admin\AppData\Local\Temp\\cvtres.exe
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4996

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\cvtres.exe
Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\winini.exe
Filesize
456KB

MD5
0fdd1f2655c96e1657379dce2a5d67c0

SHA1
7cb5f6556682da965021c9c483b1d2360705ba15

SHA256
b1597e64ac73a4170a751c055e882123e99441b7449ff4bafb6ca5f64e465d11

SHA512
84593ca9872e5a23fa090075d3dc665c81962bef1acfd2b43d2607ab42daa43f7e5f5195bb62669cba053c4cc01f7e23a258fdaf4662a96cc507c7c2a36cf03b

Download Submit
memory/1340-0-0x0000000074642000-0x0000000074643000-memory.dmp

Filesize
4KB

Download
memory/1340-1-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1340-2-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1340-15-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1784-16-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1784-17-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/1784-31-0x0000000074640000-0x0000000074BF1000-memory.dmp

Filesize
5.7MB

Download
memory/4996-29-0x00000000022D0000-0x00000000022D1000-memory.dmp

Filesize
4KB

Download
memory/4996-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-32-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-33-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-35-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-38-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-39-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-42-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-44-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4996-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download