darkcomet | a4680f71a2c0e4c5a18ab267ab982fbe09e29f6dcb0e5a78d2a1f7bde36e508d

General

Target

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Size

260KB
MD5

48ec0a901bd97559d139f86d69bee34b
SHA1

dc72ab37041cb5d5b0bed3e6c2f7a1c86f65f860
SHA256

a4680f71a2c0e4c5a18ab267ab982fbe09e29f6dcb0e5a78d2a1f7bde36e508d
SHA512

5811f1dd8014ce5c165a2e72a4159cd4753fadb8299e54520926a1120a970aabb63bbc8543cddc57541c0e4ad933be2b67b7e7dabc00a798de4da384feec7cf3
SSDEEP

6144:WD7cY2fgssM7Wirg9KXylmRiL+QMeC/i6isqX7UovnONztByipwxZ:Wl8E4w5huat7UovONzbXw

Score

10^/10

darkcomet server discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Server

C2

74.67.204.217:1604

Mutex

DC_MUTEX-K3RB92Y

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
jUVNG81kyjy5
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:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.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"	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

Disables Task Manager via registry modification
evasion
Drops file in Drivers directory 1 IoCs

Processes:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

description ioc process

File opened for modification C:\Windows\system32\drivers\etc\hosts 48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

description	ioc	process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	48ec0a901bd97559d139f86d69bee34b_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:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

5076 msdcsc.exe

pid	process
5076	msdcsc.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/2788-0-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/2788-64-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral2/memory/5076-66-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral2/memory/5076-67-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral2/memory/5076-70-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral2/memory/5076-72-0x0000000000400000-0x00000000004BD000-memory.dmp	upx
behavioral2/memory/5076-80-0x0000000000400000-0x00000000004BD000-memory.dmp	upx

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 2 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:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exemsdcsc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Modifies registry class 1 IoCs

Processes:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeSecurityPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeBackupPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeRestorePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeShutdownPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeDebugPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeUndockPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: 33	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: 34	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: 35	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: 36	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	5076	msdcsc.exe
Token: SeSecurityPrivilege	5076	msdcsc.exe
Token: SeTakeOwnershipPrivilege	5076	msdcsc.exe
Token: SeLoadDriverPrivilege	5076	msdcsc.exe
Token: SeSystemProfilePrivilege	5076	msdcsc.exe
Token: SeSystemtimePrivilege	5076	msdcsc.exe
Token: SeProfSingleProcessPrivilege	5076	msdcsc.exe
Token: SeIncBasePriorityPrivilege	5076	msdcsc.exe
Token: SeCreatePagefilePrivilege	5076	msdcsc.exe
Token: SeBackupPrivilege	5076	msdcsc.exe
Token: SeRestorePrivilege	5076	msdcsc.exe
Token: SeShutdownPrivilege	5076	msdcsc.exe
Token: SeDebugPrivilege	5076	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	5076	msdcsc.exe
Token: SeChangeNotifyPrivilege	5076	msdcsc.exe
Token: SeRemoteShutdownPrivilege	5076	msdcsc.exe
Token: SeUndockPrivilege	5076	msdcsc.exe
Token: SeManageVolumePrivilege	5076	msdcsc.exe
Token: SeImpersonatePrivilege	5076	msdcsc.exe
Token: SeCreateGlobalPrivilege	5076	msdcsc.exe
Token: 33	5076	msdcsc.exe
Token: 34	5076	msdcsc.exe
Token: 35	5076	msdcsc.exe
Token: 36	5076	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

5076 msdcsc.exe

pid	process
5076	msdcsc.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe

description	pid	process	target process
PID 2788 wrote to memory of 5076	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe	msdcsc.exe
PID 2788 wrote to memory of 5076	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe	msdcsc.exe
PID 2788 wrote to memory of 5076	2788	48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\48ec0a901bd97559d139f86d69bee34b_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2788
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:5076

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\Documents\MSDCSC\msdcsc.exe

Filesize
260KB

MD5
48ec0a901bd97559d139f86d69bee34b

SHA1
dc72ab37041cb5d5b0bed3e6c2f7a1c86f65f860

SHA256
a4680f71a2c0e4c5a18ab267ab982fbe09e29f6dcb0e5a78d2a1f7bde36e508d

SHA512
5811f1dd8014ce5c165a2e72a4159cd4753fadb8299e54520926a1120a970aabb63bbc8543cddc57541c0e4ad933be2b67b7e7dabc00a798de4da384feec7cf3

Download Submit
memory/2788-0-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/2788-1-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/2788-64-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5076-65-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/5076-66-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5076-67-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5076-68-0x0000000002180000-0x0000000002181000-memory.dmp

Filesize
4KB

Download
memory/5076-70-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5076-72-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/5076-80-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads