darkcomet | efa221bd1f00a64e77ac1963987bd7a2ec1b96cb449970d0f01c98938ebdb6a4

General

Target

45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe
Size

383KB
MD5

45c7ee4bed00a5fd364b477e874fc849
SHA1

b5f3d363663b4a30302f7aa0bd71a091b9c72c04
SHA256

efa221bd1f00a64e77ac1963987bd7a2ec1b96cb449970d0f01c98938ebdb6a4
SHA512

d3dc25bbc2f0a76dc27691c334d9602d268622bcf509665bc9c4442bdab67b9b983bf4a33b8aa7a9efc004d79989beb7067d0f9d4c18c7358fadd12e4a7c1001
SSDEEP

6144:szLhp3fD0scN5iULQQTFwK2BA/iV3W7x/JkpnyG88HpdFIB0MDXMe7uLZ1IMGIGW:khpvotN5VLQQKeiLyG8afFC0MDXMe7OH

Score

10^/10

darkcomet guest16 discovery rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

holahola.no-ip.org:1337

Mutex

DC_MUTEX-8V9LZ3Y

Attributes

gencode
9lBjCyQW2Soe
install
false
offline_keylogger
true
password
tigresa
persistence
false

Signatures

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

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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
1184	STUB3.EXE

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4080-0-0x00000000001B0000-0x0000000000275000-memory.dmp	upx
behavioral2/memory/4080-15-0x00000000001B0000-0x0000000000275000-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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	STUB3.EXE

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe
Key created	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000_Classes\Local Settings	OpenWith.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1184	STUB3.EXE
Token: SeSecurityPrivilege	1184	STUB3.EXE
Token: SeTakeOwnershipPrivilege	1184	STUB3.EXE
Token: SeLoadDriverPrivilege	1184	STUB3.EXE
Token: SeSystemProfilePrivilege	1184	STUB3.EXE
Token: SeSystemtimePrivilege	1184	STUB3.EXE
Token: SeProfSingleProcessPrivilege	1184	STUB3.EXE
Token: SeIncBasePriorityPrivilege	1184	STUB3.EXE
Token: SeCreatePagefilePrivilege	1184	STUB3.EXE
Token: SeBackupPrivilege	1184	STUB3.EXE
Token: SeRestorePrivilege	1184	STUB3.EXE
Token: SeShutdownPrivilege	1184	STUB3.EXE
Token: SeDebugPrivilege	1184	STUB3.EXE
Token: SeSystemEnvironmentPrivilege	1184	STUB3.EXE
Token: SeChangeNotifyPrivilege	1184	STUB3.EXE
Token: SeRemoteShutdownPrivilege	1184	STUB3.EXE
Token: SeUndockPrivilege	1184	STUB3.EXE
Token: SeManageVolumePrivilege	1184	STUB3.EXE
Token: SeImpersonatePrivilege	1184	STUB3.EXE
Token: SeCreateGlobalPrivilege	1184	STUB3.EXE
Token: 33	1184	STUB3.EXE
Token: 34	1184	STUB3.EXE
Token: 35	1184	STUB3.EXE
Token: 36	1184	STUB3.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
436	OpenWith.exe
1184	STUB3.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4080 wrote to memory of 1184	4080	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe	85
PID 4080 wrote to memory of 1184	4080	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe	85
PID 4080 wrote to memory of 1184	4080	45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe	85

C:\Users\Admin\AppData\Local\Temp\45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\45c7ee4bed00a5fd364b477e874fc849_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4080
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\STUB3.EXE
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\STUB3.EXE"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1184

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:436

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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

Replay Monitor

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\STUB3.EXE

Filesize
658KB

MD5
cf2b56d6d938a2fbccecf6735dd164dd

SHA1
6c02aa12b46cd27f5b41769fb97e1303e0c0eb9b

SHA256
137805bfc9c4c43a0e737e25e6d739c89b0957549bfe4c033450517517bc7a9d

SHA512
a402bd45a9997626100147e08081bfd1bf64b5b835f712f538184b6aa5bf8545a8fd62186c6591e979dccf2f9bd3fcdb845a1df383d3ecfea4a19a76bbc7d88d

Download Submit
memory/1184-21-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-23-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-16-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-17-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-18-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-19-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-29-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-20-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-22-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-28-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-24-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-25-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-26-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1184-27-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4080-0-0x00000000001B0000-0x0000000000275000-memory.dmp

Filesize
788KB

Download
memory/4080-15-0x00000000001B0000-0x0000000000275000-memory.dmp

Filesize
788KB

Download

Analysis

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