darkcomet | f0f5e34f413e2e22777ad229f003759e0e56b4a038974b85e930611067cb84e7

Analysis

max time kernel
93s
max time network
138s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29-11-2024 03:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
Size

716KB
MD5

aea6da14381b2b35443ede64825c992c
SHA1

3c13c5b0553041bfae7d8c2c790ec63d79cca0e1
SHA256

f0f5e34f413e2e22777ad229f003759e0e56b4a038974b85e930611067cb84e7
SHA512

86557e50b51d4058b3e3a50af6f429ed0520042b0af606739b82aa322e7e7d9c7d80f81c558969f5e12287b08bdd5e06818145c813b6b80a2c8f2c79011b3398
SSDEEP

12288:7VLJOQr8WcV3wOhm4MbM2ev/B2f4f1nON+1Gs9ijVb6ep254:7VLJOPWcV3rhYincaGs9ij4e24

Score

10^/10

darkcomet guest17 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest17

127.0.0.1:1604

Mutex

DC_MUTEX-74G4G59

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
rNRrNWNwGAgT
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

cvtres.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cvtres.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
3312	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

cvtres.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\msdcsc.exe"	cvtres.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe

description	pid	Process	procid_target
PID 2584 set thread context of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

notepad.exemsdcsc.exeaea6da14381b2b35443ede64825c992c_JaffaCakes118.execvtres.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe

Modifies registry class 1 IoCs

Processes:

cvtres.exe

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

Suspicious behavior: EnumeratesProcesses 12 IoCs

Processes:

aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe

pid	Process
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

aea6da14381b2b35443ede64825c992c_JaffaCakes118.execvtres.exe

description	pid	Process
Token: SeDebugPrivilege	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2188	cvtres.exe
Token: SeSecurityPrivilege	2188	cvtres.exe
Token: SeTakeOwnershipPrivilege	2188	cvtres.exe
Token: SeLoadDriverPrivilege	2188	cvtres.exe
Token: SeSystemProfilePrivilege	2188	cvtres.exe
Token: SeSystemtimePrivilege	2188	cvtres.exe
Token: SeProfSingleProcessPrivilege	2188	cvtres.exe
Token: SeIncBasePriorityPrivilege	2188	cvtres.exe
Token: SeCreatePagefilePrivilege	2188	cvtres.exe
Token: SeBackupPrivilege	2188	cvtres.exe
Token: SeRestorePrivilege	2188	cvtres.exe
Token: SeShutdownPrivilege	2188	cvtres.exe
Token: SeDebugPrivilege	2188	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2188	cvtres.exe
Token: SeChangeNotifyPrivilege	2188	cvtres.exe
Token: SeRemoteShutdownPrivilege	2188	cvtres.exe
Token: SeUndockPrivilege	2188	cvtres.exe
Token: SeManageVolumePrivilege	2188	cvtres.exe
Token: SeImpersonatePrivilege	2188	cvtres.exe
Token: SeCreateGlobalPrivilege	2188	cvtres.exe
Token: 33	2188	cvtres.exe
Token: 34	2188	cvtres.exe
Token: 35	2188	cvtres.exe
Token: 36	2188	cvtres.exe

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

aea6da14381b2b35443ede64825c992c_JaffaCakes118.execvtres.exe

description	pid	Process	procid_target
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2584 wrote to memory of 2188	2584	aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe	92
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 4896	2188	cvtres.exe	97
PID 2188 wrote to memory of 3312	2188	cvtres.exe	98
PID 2188 wrote to memory of 3312	2188	cvtres.exe	98
PID 2188 wrote to memory of 3312	2188	cvtres.exe	98

C:\Users\Admin\AppData\Local\Temp\aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\aea6da14381b2b35443ede64825c992c_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  2⤵
  - Modifies WinLogon for persistence
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2188
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4896
- - C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
    "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/2188-3-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2188-4-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2188-6-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2188-11-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2188-73-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2584-0-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

Filesize
4KB

Download
memory/2584-1-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/2584-2-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/2584-7-0x0000000074EF2000-0x0000000074EF3000-memory.dmp

Filesize
4KB

Download
memory/2584-10-0x0000000074EF0000-0x00000000754A1000-memory.dmp

Filesize
5.7MB

Download
memory/4896-13-0x0000000000A30000-0x0000000000A31000-memory.dmp

Filesize
4KB

Download