darkcomet | 3f1d5330a734abb4fccef579be3425b398b26c5156ceeb5a4b79a2593f139e3f

General

Target

JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe
Size

1.3MB
MD5

fcca2bc6c99f84188dacb2d135dc580c
SHA1

e6571099bd37e04ec25d6e6bcd498f5a103d3e3f
SHA256

3f1d5330a734abb4fccef579be3425b398b26c5156ceeb5a4b79a2593f139e3f
SHA512

838de77ac3ba57407e17725e328ed3e930b16150d7b6935fb70a44034217cde6cf6240121c4e396c5f7213e5d905e8683fcbe11407acd9320b225cc03d1fc22f
SSDEEP

12288:PcrnJ8J4UcL/LYp7N4T9F324NYAsIkt5dC+6EIn8ddAPrUcXsZ/Fa4vZqmoHafMJ:YJear3Fm42hMiI8gNB0ipPsxFpUuA

Score

10^/10

darkcomet guest16 discovery rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

iamusinganoip.no-ip.org:1604

Mutex

DC_MUTEX-PBQ9FLV

Attributes

gencode
K4gN6lRcvAXj
install
false
offline_keylogger
true
persistence
false

rc4.plain

Signatures

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
51	1848	Process not Found

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-1-5-21-2508704002-2325818048-3575902788-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	vbc.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 844 set thread context of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3716-5-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-9-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-11-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-13-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-12-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-18-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-19-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-22-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-23-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-26-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-28-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-29-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-30-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-31-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-32-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-33-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-34-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-35-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-36-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-37-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-38-0x0000000000400000-0x0000000000570000-memory.dmp	upx
behavioral2/memory/3716-39-0x0000000000400000-0x0000000000570000-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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NOTEPAD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MicrosoftEdgeUpdate.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
1900	MicrosoftEdgeUpdate.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2508704002-2325818048-3575902788-1000_Classes\Local Settings	vbc.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
3384	NOTEPAD.EXE

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3716	vbc.exe
Token: SeSecurityPrivilege	3716	vbc.exe
Token: SeTakeOwnershipPrivilege	3716	vbc.exe
Token: SeLoadDriverPrivilege	3716	vbc.exe
Token: SeSystemProfilePrivilege	3716	vbc.exe
Token: SeSystemtimePrivilege	3716	vbc.exe
Token: SeProfSingleProcessPrivilege	3716	vbc.exe
Token: SeIncBasePriorityPrivilege	3716	vbc.exe
Token: SeCreatePagefilePrivilege	3716	vbc.exe
Token: SeBackupPrivilege	3716	vbc.exe
Token: SeRestorePrivilege	3716	vbc.exe
Token: SeShutdownPrivilege	3716	vbc.exe
Token: SeDebugPrivilege	3716	vbc.exe
Token: SeSystemEnvironmentPrivilege	3716	vbc.exe
Token: SeChangeNotifyPrivilege	3716	vbc.exe
Token: SeRemoteShutdownPrivilege	3716	vbc.exe
Token: SeUndockPrivilege	3716	vbc.exe
Token: SeManageVolumePrivilege	3716	vbc.exe
Token: SeImpersonatePrivilege	3716	vbc.exe
Token: SeCreateGlobalPrivilege	3716	vbc.exe
Token: 33	3716	vbc.exe
Token: 34	3716	vbc.exe
Token: 35	3716	vbc.exe
Token: 36	3716	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3716	vbc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 844 wrote to memory of 3716	844	JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe	89
PID 3716 wrote to memory of 3384	3716	vbc.exe	90
PID 3716 wrote to memory of 3384	3716	vbc.exe	90
PID 3716 wrote to memory of 3384	3716	vbc.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fcca2bc6c99f84188dacb2d135dc580c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:844
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3716
- - C:\Windows\SysWOW64\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\APPLICATION.TXT
    3⤵
    - System Location Discovery: System Language Discovery
    - Opens file in notepad (likely ransom note)
    PID:3384

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSI0IiBpbnN0YWxsZGF0ZXRpbWU9IjE3MzkyODMyMzYiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4Mzc1NDI1MTE0ODAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MzM4MjQzMjU0Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:1900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\APPLICATION.TXT

Filesize
665B

MD5
0fa4ade93dbbbda48680a6c337a578f1

SHA1
720a415b0e6777778d16a382108ea1669d2945ad

SHA256
d71ce807f8533193bea8ee539810cdba8d10676802de08c4760f5b32fc74402f

SHA512
125f69c0cf12205308351f2895814c7fb21ea3019ab29c08e783b942f996075c6f3d5330152a85bb5e8a6be25d591ef502470cdffd80770957e16f8ed7717a43

Download Submit
C:\Users\Admin\AppData\Local\Temp\vbc.exe

Filesize
1.1MB

MD5
d881de17aa8f2e2c08cbb7b265f928f9

SHA1
08936aebc87decf0af6e8eada191062b5e65ac2a

SHA256
b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0

SHA512
5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34

Download Submit
memory/844-1-0x00000000744F0000-0x0000000074AA1000-memory.dmp

Filesize
5.7MB

Download
memory/844-2-0x00000000744F0000-0x0000000074AA1000-memory.dmp

Filesize
5.7MB

Download
memory/844-25-0x00000000744F0000-0x0000000074AA1000-memory.dmp

Filesize
5.7MB

Download
memory/844-21-0x00000000744F0000-0x0000000074AA1000-memory.dmp

Filesize
5.7MB

Download
memory/844-20-0x00000000744F2000-0x00000000744F3000-memory.dmp

Filesize
4KB

Download
memory/844-0-0x00000000744F2000-0x00000000744F3000-memory.dmp

Filesize
4KB

Download
memory/3716-13-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-28-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-12-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-18-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-19-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-11-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-9-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-22-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-23-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-5-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-26-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-14-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/3716-29-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-30-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-31-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-32-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-33-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-34-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-35-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-36-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-37-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-38-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download
memory/3716-39-0x0000000000400000-0x0000000000570000-memory.dmp

Filesize
1.4MB

Download

Analysis

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