darkcomet | 2530fd7526e7258be395e2714294e27b5c746d96b027e6fc932530439bf699d4

General

Target

JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe
Size

954KB
MD5

2f7016b37139cfdb90de1b3abefc8e10
SHA1

875034536e5e985b682696278d27f99d8e5d35f0
SHA256

2530fd7526e7258be395e2714294e27b5c746d96b027e6fc932530439bf699d4
SHA512

7644a4b19aaf86ee57c3849dafe5618b6ba6a89c75d3dd19ed85c3685bf6b3dcd96094db8e4d56f48d16181dcbbe3479f34f77c00c98ec43f662ff890ef299a5
SSDEEP

24576:w5403o25rcHLIuzPm4BXHULgy8XuxFi6l43S:wFpUDm+X9+

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

ittechsupport221.no-ip.biz:1604

Mutex

DC_MUTEX-AHK2LFX

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
VpvSCZEtm94V
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

rc4.plain

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

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\Control Panel\International\Geo\Nation	svchost.exe

Executes dropped EXE 2 IoCs

pid	Process
4608	svchost.exe
2116	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	svchost.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2928 set thread context of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85

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 3 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe
Token: SeIncreaseQuotaPrivilege	4608	svchost.exe
Token: SeSecurityPrivilege	4608	svchost.exe
Token: SeTakeOwnershipPrivilege	4608	svchost.exe
Token: SeLoadDriverPrivilege	4608	svchost.exe
Token: SeSystemProfilePrivilege	4608	svchost.exe
Token: SeSystemtimePrivilege	4608	svchost.exe
Token: SeProfSingleProcessPrivilege	4608	svchost.exe
Token: SeIncBasePriorityPrivilege	4608	svchost.exe
Token: SeCreatePagefilePrivilege	4608	svchost.exe
Token: SeBackupPrivilege	4608	svchost.exe
Token: SeRestorePrivilege	4608	svchost.exe
Token: SeShutdownPrivilege	4608	svchost.exe
Token: SeDebugPrivilege	4608	svchost.exe
Token: SeSystemEnvironmentPrivilege	4608	svchost.exe
Token: SeChangeNotifyPrivilege	4608	svchost.exe
Token: SeRemoteShutdownPrivilege	4608	svchost.exe
Token: SeUndockPrivilege	4608	svchost.exe
Token: SeManageVolumePrivilege	4608	svchost.exe
Token: SeImpersonatePrivilege	4608	svchost.exe
Token: SeCreateGlobalPrivilege	4608	svchost.exe
Token: 33	4608	svchost.exe
Token: 34	4608	svchost.exe
Token: 35	4608	svchost.exe
Token: 36	4608	svchost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 2928 wrote to memory of 4608	2928	JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe	85
PID 4608 wrote to memory of 2116	4608	svchost.exe	86
PID 4608 wrote to memory of 2116	4608	svchost.exe	86
PID 4608 wrote to memory of 2116	4608	svchost.exe	86

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2f7016b37139cfdb90de1b3abefc8e10.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  C:\Users\Admin\AppData\Local\Temp\svchost.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4608
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2116

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\svchost.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/2928-0-0x0000000074A52000-0x0000000074A53000-memory.dmp

Filesize
4KB

Download
memory/2928-1-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2928-2-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/2928-16-0x0000000074A50000-0x0000000075001000-memory.dmp

Filesize
5.7MB

Download
memory/4608-5-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4608-8-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4608-11-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4608-10-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download
memory/4608-13-0x00000000025B0000-0x00000000025B1000-memory.dmp

Filesize
4KB

Download
memory/4608-26-0x0000000000400000-0x00000000004B4000-memory.dmp

Filesize
720KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads