darkcomet | 35bc08c80902a5f572582183c9b89891cccf2a80b5527e9a00a573e30a0883bb

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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-1-5-21-1298544033-3225604241-2703760938-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "expstart.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\winini.exe"	winini.exe

Executes dropped EXE 2 IoCs

Processes:

winini.execvtres.exe

pid process

2544 winini.exe
2680 cvtres.exe
Loads dropped DLL 3 IoCs

Processes:

19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exewinini.exe

pid process

2728 19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
2728 19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
2544 winini.exe

pid	process
2544	winini.exe
2680	cvtres.exe

pid	process
2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
2544	winini.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-1-5-21-1298544033-3225604241-2703760938-1000\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 2544 set thread context of 2680 2544 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

2544 winini.exe
2544 winini.exe

description	pid	process	target process
PID 2544 set thread context of 2680	2544	winini.exe	cvtres.exe

pid	process
2544	winini.exe
2544	winini.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

winini.execvtres.exe

description	pid	process
Token: SeDebugPrivilege	2544	winini.exe
Token: SeDebugPrivilege	2544	winini.exe
Token: SeIncreaseQuotaPrivilege	2680	cvtres.exe
Token: SeSecurityPrivilege	2680	cvtres.exe
Token: SeTakeOwnershipPrivilege	2680	cvtres.exe
Token: SeLoadDriverPrivilege	2680	cvtres.exe
Token: SeSystemProfilePrivilege	2680	cvtres.exe
Token: SeSystemtimePrivilege	2680	cvtres.exe
Token: SeProfSingleProcessPrivilege	2680	cvtres.exe
Token: SeIncBasePriorityPrivilege	2680	cvtres.exe
Token: SeCreatePagefilePrivilege	2680	cvtres.exe
Token: SeBackupPrivilege	2680	cvtres.exe
Token: SeRestorePrivilege	2680	cvtres.exe
Token: SeShutdownPrivilege	2680	cvtres.exe
Token: SeDebugPrivilege	2680	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2680	cvtres.exe
Token: SeChangeNotifyPrivilege	2680	cvtres.exe
Token: SeRemoteShutdownPrivilege	2680	cvtres.exe
Token: SeUndockPrivilege	2680	cvtres.exe
Token: SeManageVolumePrivilege	2680	cvtres.exe
Token: SeImpersonatePrivilege	2680	cvtres.exe
Token: SeCreateGlobalPrivilege	2680	cvtres.exe
Token: 33	2680	cvtres.exe
Token: 34	2680	cvtres.exe
Token: 35	2680	cvtres.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

cvtres.exe

pid process

2680 cvtres.exe

pid	process
2680	cvtres.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exewinini.exe

description	pid	process	target process
PID 2728 wrote to memory of 2544	2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 2728 wrote to memory of 2544	2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 2728 wrote to memory of 2544	2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 2728 wrote to memory of 2544	2728	19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe	winini.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe
PID 2544 wrote to memory of 2680	2544	winini.exe	cvtres.exe

C:\Users\Admin\AppData\Local\Temp\19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\19032a633afb59d6a619f5f9cc1158a2_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2728

C:\Users\Admin\AppData\Local\Temp\winini.exe
"C:\Users\Admin\AppData\Local\Temp\winini.exe"
2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544

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:2680

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\cvtres.exe
Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

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

MD5
0fdd1f2655c96e1657379dce2a5d67c0

SHA1
7cb5f6556682da965021c9c483b1d2360705ba15

SHA256
b1597e64ac73a4170a751c055e882123e99441b7449ff4bafb6ca5f64e465d11

SHA512
84593ca9872e5a23fa090075d3dc665c81962bef1acfd2b43d2607ab42daa43f7e5f5195bb62669cba053c4cc01f7e23a258fdaf4662a96cc507c7c2a36cf03b

Download Submit
memory/2544-16-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2544-42-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2544-15-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2544-14-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2680-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-41-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-56-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-36-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-34-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-32-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-30-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-37-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-31-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-38-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-40-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-54-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-53-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-43-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-44-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-45-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-46-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-47-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-48-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-49-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-50-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-51-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2680-52-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2728-1-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-13-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download
memory/2728-0-0x0000000074B71000-0x0000000074B72000-memory.dmp

Filesize
4KB

Download
memory/2728-2-0x0000000074B70000-0x000000007511B000-memory.dmp

Filesize
5.7MB

Download