darkcomet | a67a96c84573af7472e891c437426bc8562c45ea52a66492e5d3c100e06def09

General

Target

D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
Size

3.0MB
MD5

c5e77ee2c96212dcb64b9ead1b746dd8
SHA1

816610afe4151c9fe59449f30922f68babd665fc
SHA256

d075589cd45380aab929c10ce82babf63533a5025527b1f7f30b55059c5d0ad2
SHA512

2e8418f8b82686a76f83bcf4890909fa2678f7b97c49b02de84f27af2dd503260047983fde4a99a69421dada89caf7db033ade27b1d457e227cc208c02544446
SSDEEP

49152:LAI+iYFsw8ob4+vrrQtgKNnZj/Y4JneyOLHgmk7V5Pz8IF+8Ieg9uRKcT2MOmZuY:LAI+irwbVrsgKrxOLAmk3IIsuIcT2MOg

Score

10^/10

darkcomet theoldback discovery rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

THEOLDBACK

C2

cosrem.ddns.net:2301

cosrem.ddnsgeek.com:2301

cosrem.dyndns.org:2301

Mutex

DC_MUTEX-T4DJK1T

Attributes

gencode
cRqpT889gMa4
install
false
offline_keylogger
true
persistence
false

Signatures

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

Executes dropped EXE 3 IoCs

pid	Process
2312	PCCleaner.exe
2620	dllhost.exe
1668	dllhost.exe

Loads dropped DLL 8 IoCs

pid	Process
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2620 set thread context of 1668	2620	dllhost.exe	35

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
File opened for modification	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\Uninstall.exe	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
File created	C:\Program Files (x86)\PC Helpsoft\PC Cleaner\Uninstall.ini	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2620	dllhost.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	2620	dllhost.exe
Token: SeIncreaseQuotaPrivilege	1668	dllhost.exe
Token: SeSecurityPrivilege	1668	dllhost.exe
Token: SeTakeOwnershipPrivilege	1668	dllhost.exe
Token: SeLoadDriverPrivilege	1668	dllhost.exe
Token: SeSystemProfilePrivilege	1668	dllhost.exe
Token: SeSystemtimePrivilege	1668	dllhost.exe
Token: SeProfSingleProcessPrivilege	1668	dllhost.exe
Token: SeIncBasePriorityPrivilege	1668	dllhost.exe
Token: SeCreatePagefilePrivilege	1668	dllhost.exe
Token: SeBackupPrivilege	1668	dllhost.exe
Token: SeRestorePrivilege	1668	dllhost.exe
Token: SeShutdownPrivilege	1668	dllhost.exe
Token: SeDebugPrivilege	1668	dllhost.exe
Token: SeSystemEnvironmentPrivilege	1668	dllhost.exe
Token: SeChangeNotifyPrivilege	1668	dllhost.exe
Token: SeRemoteShutdownPrivilege	1668	dllhost.exe
Token: SeUndockPrivilege	1668	dllhost.exe
Token: SeManageVolumePrivilege	1668	dllhost.exe
Token: SeImpersonatePrivilege	1668	dllhost.exe
Token: SeCreateGlobalPrivilege	1668	dllhost.exe
Token: 33	1668	dllhost.exe
Token: 34	1668	dllhost.exe
Token: 35	1668	dllhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1668	dllhost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2312	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	30
PID 2112 wrote to memory of 2312	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	30
PID 2112 wrote to memory of 2312	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	30
PID 2112 wrote to memory of 2312	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	30
PID 2112 wrote to memory of 2620	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	32
PID 2112 wrote to memory of 2620	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	32
PID 2112 wrote to memory of 2620	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	32
PID 2112 wrote to memory of 2620	2112	D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe	32
PID 2620 wrote to memory of 2944	2620	dllhost.exe	33
PID 2620 wrote to memory of 2944	2620	dllhost.exe	33
PID 2620 wrote to memory of 2944	2620	dllhost.exe	33
PID 2620 wrote to memory of 2944	2620	dllhost.exe	33
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35
PID 2620 wrote to memory of 1668	2620	dllhost.exe	35

C:\Users\Admin\AppData\Local\Temp\D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe
"C:\Users\Admin\AppData\Local\Temp\D075589CD45380AAB929C10CE82BABF63533A5025527B1F7F30B55059C5D0AD2.exe"
1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe
  "C:\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe"
  2⤵
  - Executes dropped EXE
  PID:2312
- C:\Users\Admin\AppData\Roaming\dllhost.exe
  "C:\Users\Admin\AppData\Roaming\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2620
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hnjVqgcvxF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD20E.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2944
- - C:\Users\Admin\AppData\Roaming\dllhost.exe
    "C:\Users\Admin\AppData\Roaming\dllhost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1668

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

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\tmpD20E.tmp

Filesize
1KB

MD5
a6d44ab190fbbd66eb691544189031fe

SHA1
94073a8eaf35e9a84adda5e3e41810b0e28e2e6d

SHA256
3848e85a844f15118234f1083d5d218a0ffafc052965e7730a9aeb85eb1ae63e

SHA512
8b1afb892d7a9caf36b74b32a4071c0718a8e04798373848f0287df7a7cb1f6a83db9db94221dbe07af7d3ac52e96756a5d62076b85308f62c8ce2892d277944

Download Submit
C:\Users\Admin\AppData\Roaming\dllhost.exe

Filesize
1.0MB

MD5
010b1d2cd7f379d8444180fb1ad1a721

SHA1
5798a89f64dbeac6b25d9e1410bfb11467e9c282

SHA256
fd553f69d456b3dd2454f4e4ed4a68e74e833db7455081ef110c15fbdc7444a4

SHA512
1a78ac744b3649b2e65c65c0d65f9a8dcb7ea470eaa491105a95a53581571f427bf1b3634722a8ecfb5a567c76b1ef04a9d4f5b05d0a8cc692f850d2a2b3fdb2

Download Submit
\Program Files (x86)\PC Helpsoft\PC Cleaner\PCCleaner.exe

Filesize
1.8MB

MD5
732978cd7c578c5b2b3c79b0a9114c2d

SHA1
3a97df574f86c9d133406761e8ec51400138e816

SHA256
cb5fbbaf0f984d6491d1c83135b849ed14b8dda5805af3bfec5cda77ac5920b3

SHA512
aa5d340c6deb1bd3d2ec2e28ee23b5cf51751edc084480bc00146475d4f5fa6aee57c431e874513b57bb9a190ec32ca1d0b667264c0a3ca6af4fe6379cbb9276

Download Submit
memory/1668-74-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-80-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-76-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-88-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-89-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-78-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-82-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-85-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-87-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-70-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-72-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/1668-84-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1668-68-0x0000000000400000-0x00000000004BA000-memory.dmp

Filesize
744KB

Download
memory/2112-22-0x00000000036D0000-0x0000000003EB4000-memory.dmp

Filesize
7.9MB

Download
memory/2112-33-0x00000000036D0000-0x0000000003EB4000-memory.dmp

Filesize
7.9MB

Download
memory/2112-54-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2112-31-0x00000000036D0000-0x0000000003EB4000-memory.dmp

Filesize
7.9MB

Download
memory/2112-32-0x00000000036D0000-0x0000000003EB4000-memory.dmp

Filesize
7.9MB

Download
memory/2112-91-0x0000000000400000-0x000000000044B000-memory.dmp

Filesize
300KB

Download
memory/2312-37-0x0000000000400000-0x0000000000BE4000-memory.dmp

Filesize
7.9MB

Download
memory/2312-35-0x0000000000400000-0x0000000000BE4000-memory.dmp

Filesize
7.9MB

Download
memory/2620-61-0x0000000005250000-0x0000000005312000-memory.dmp

Filesize
776KB

Download
memory/2620-60-0x0000000005770000-0x000000000585E000-memory.dmp

Filesize
952KB

Download
memory/2620-53-0x00000000005E0000-0x00000000005E8000-memory.dmp

Filesize
32KB

Download
memory/2620-52-0x0000000001250000-0x000000000135C000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads