darkcomet | 3178ebb16fffc765f2f69266a92d10f1f996a51e7ed8a27482a9cfebdca0b567

General

Target

67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe
Size

450KB
MD5

67de7126bce1376edeb487ed34d6892b
SHA1

901df5eeeba0d5d6774b646599ea98c430970e4b
SHA256

3178ebb16fffc765f2f69266a92d10f1f996a51e7ed8a27482a9cfebdca0b567
SHA512

236dd13642b3e79396aefb05f40edceb5c599c30d1d2c138193558853fc5cc12d9ad1bc6e13ee42b7ad9ddd38f2f47387aeafd7f616c743274b84d29a56a3b6f
SSDEEP

12288:+MnBsky90bVpotSvGIUTXmxk7wc9d8yDCb:rsky2potS+BTXgVc9dD

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

randomhost1.no-ip.biz:1604

Mutex

DC_MUTEX-XGWDZ9R

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
05XmjuYKW509
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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

RUNESC~1.EXE

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	RUNESC~1.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:

RUNESC~1.EXE

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	RUNESC~1.EXE

Executes dropped EXE 3 IoCs

Processes:

RUNESC~1.EXEmsdcsc.exetwunk_32.exe

pid process

2008 RUNESC~1.EXE
1284 msdcsc.exe
1624 twunk_32.exe

pid	process
2008	RUNESC~1.EXE
1284	msdcsc.exe
1624	twunk_32.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exeRUNESC~1.EXEmsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	RUNESC~1.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

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

System Information Discovery
T1082

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:

RUNESC~1.EXEmsdcsc.exetwunk_32.exenotepad.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RUNESC~1.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	twunk_32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe

Modifies registry class 1 IoCs

Processes:

RUNESC~1.EXE

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ RUNESC~1.EXE

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

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

RUNESC~1.EXEmsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2008	RUNESC~1.EXE
Token: SeSecurityPrivilege	2008	RUNESC~1.EXE
Token: SeTakeOwnershipPrivilege	2008	RUNESC~1.EXE
Token: SeLoadDriverPrivilege	2008	RUNESC~1.EXE
Token: SeSystemProfilePrivilege	2008	RUNESC~1.EXE
Token: SeSystemtimePrivilege	2008	RUNESC~1.EXE
Token: SeProfSingleProcessPrivilege	2008	RUNESC~1.EXE
Token: SeIncBasePriorityPrivilege	2008	RUNESC~1.EXE
Token: SeCreatePagefilePrivilege	2008	RUNESC~1.EXE
Token: SeBackupPrivilege	2008	RUNESC~1.EXE
Token: SeRestorePrivilege	2008	RUNESC~1.EXE
Token: SeShutdownPrivilege	2008	RUNESC~1.EXE
Token: SeDebugPrivilege	2008	RUNESC~1.EXE
Token: SeSystemEnvironmentPrivilege	2008	RUNESC~1.EXE
Token: SeChangeNotifyPrivilege	2008	RUNESC~1.EXE
Token: SeRemoteShutdownPrivilege	2008	RUNESC~1.EXE
Token: SeUndockPrivilege	2008	RUNESC~1.EXE
Token: SeManageVolumePrivilege	2008	RUNESC~1.EXE
Token: SeImpersonatePrivilege	2008	RUNESC~1.EXE
Token: SeCreateGlobalPrivilege	2008	RUNESC~1.EXE
Token: 33	2008	RUNESC~1.EXE
Token: 34	2008	RUNESC~1.EXE
Token: 35	2008	RUNESC~1.EXE
Token: 36	2008	RUNESC~1.EXE
Token: SeIncreaseQuotaPrivilege	1284	msdcsc.exe
Token: SeSecurityPrivilege	1284	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1284	msdcsc.exe
Token: SeLoadDriverPrivilege	1284	msdcsc.exe
Token: SeSystemProfilePrivilege	1284	msdcsc.exe
Token: SeSystemtimePrivilege	1284	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1284	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1284	msdcsc.exe
Token: SeCreatePagefilePrivilege	1284	msdcsc.exe
Token: SeBackupPrivilege	1284	msdcsc.exe
Token: SeRestorePrivilege	1284	msdcsc.exe
Token: SeShutdownPrivilege	1284	msdcsc.exe
Token: SeDebugPrivilege	1284	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1284	msdcsc.exe
Token: SeChangeNotifyPrivilege	1284	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1284	msdcsc.exe
Token: SeUndockPrivilege	1284	msdcsc.exe
Token: SeManageVolumePrivilege	1284	msdcsc.exe
Token: SeImpersonatePrivilege	1284	msdcsc.exe
Token: SeCreateGlobalPrivilege	1284	msdcsc.exe
Token: 33	1284	msdcsc.exe
Token: 34	1284	msdcsc.exe
Token: 35	1284	msdcsc.exe
Token: 36	1284	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

1284 msdcsc.exe

pid	process
1284	msdcsc.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exeRUNESC~1.EXEmsdcsc.exe

description	pid	process	target process
PID 3208 wrote to memory of 2008	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	RUNESC~1.EXE
PID 3208 wrote to memory of 2008	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	RUNESC~1.EXE
PID 3208 wrote to memory of 2008	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	RUNESC~1.EXE
PID 2008 wrote to memory of 1284	2008	RUNESC~1.EXE	msdcsc.exe
PID 2008 wrote to memory of 1284	2008	RUNESC~1.EXE	msdcsc.exe
PID 2008 wrote to memory of 1284	2008	RUNESC~1.EXE	msdcsc.exe
PID 3208 wrote to memory of 1624	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	twunk_32.exe
PID 3208 wrote to memory of 1624	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	twunk_32.exe
PID 3208 wrote to memory of 1624	3208	67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe	twunk_32.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe
PID 1284 wrote to memory of 4816	1284	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\67de7126bce1376edeb487ed34d6892b_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3208
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNESC~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNESC~1.EXE
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1284
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:4816
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\twunk_32.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\twunk_32.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\RUNESC~1.EXE

Filesize
660KB

MD5
1a04fc3701c65302d078a27fe6bebf2d

SHA1
7285a9d187d15f4220f3cf7631bca41e5b92d319

SHA256
27c5c07cfb4758b42bf328547758f1198c72e3efc1c23e4a26b8d38e454bec4e

SHA512
ab8d249f5f632d0c73d04e852b432d310c4d5e308028540856b4f6b1a05c38d782687cc1a3ddb0130b94f89865f12c902dce13f712f2022ce7c047cff9f17c13

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\twunk_32.exe

Filesize
30KB

MD5
0bd6e68f3ea0dd62cd86283d86895381

SHA1
e207de5c580279ad40c89bf6f2c2d47c77efd626

SHA256
a18b0a31c87475be5d4dc8ab693224e24ae79f2845d788a657555cb30c59078b

SHA512
26504d31027ceac1c6b1e3f945e447c7beb83ff9b8db29d23e1d2321fc96419686773009da95ef6cd35245788f81e546f50f829d71c39e07e07e1fecbf2d8fd4

Download Submit
memory/1284-76-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/1284-78-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2008-7-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download
memory/2008-69-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/4816-75-0x0000000000F20000-0x0000000000F21000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads