darkcomet | 3916529a43553809ac434ad23682c47670d3c70911149264005f0c5d602fe3e3

General

Target

JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
Size

480KB
MD5

4708d66f6f8496ecf88dd0ac1680dacd
SHA1

6bdab58ba50f6e9f3466a69417734d36acd2e8b6
SHA256

3916529a43553809ac434ad23682c47670d3c70911149264005f0c5d602fe3e3
SHA512

c767c117a109a20eda830a729b5183c47caaa95e8e76ec4918b7fd24cba230e0b35718c03c158ce666c3d2b475d8482251e772b8ed8325a2f99b8e365b34df8d
SSDEEP

12288:hy1lFipP5dFl9DhwZ0PRfwzp35HGPHb6kyQwTRHbVDU:hy1lc3TlnwkOaHhE

Score

10^/10

darkcomet ms-dos defense_evasion discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

ms-dos

C2

pourmoi.zapto.org:2000

pourmoi.zapto.org:200

pourmoi.zapto.org:1604

pourmoi.zapto.org:164

pourmoi.zapto.org:80

Mutex

DC_MUTEX-HM3EBEZ

Attributes

gencode
.o3or#SP7wV0
install
false
offline_keylogger
true
password
da06101266
persistence
false

rc4.plain

Signatures

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

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4396	attrib.exe
1812	attrib.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

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\winsys = "C:\\Users\\Admin\\AppData\\Local\\Temp\\winfile.exe"	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3860 set thread context of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87

UPX packed file 27 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2772-5-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-8-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-10-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-11-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-13-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-14-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-25-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-24-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-22-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-23-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-27-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-28-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-29-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-30-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-31-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-32-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-33-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-34-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-35-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-36-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-37-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-38-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-39-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-40-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-41-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-42-0x0000000000400000-0x00000000004D8000-memory.dmp	upx
behavioral2/memory/2772-43-0x0000000000400000-0x00000000004D8000-memory.dmp	upx

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2772	vbc.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
Token: 33	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
Token: SeIncBasePriorityPrivilege	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
Token: SeIncreaseQuotaPrivilege	2772	vbc.exe
Token: SeSecurityPrivilege	2772	vbc.exe
Token: SeTakeOwnershipPrivilege	2772	vbc.exe
Token: SeLoadDriverPrivilege	2772	vbc.exe
Token: SeSystemProfilePrivilege	2772	vbc.exe
Token: SeSystemtimePrivilege	2772	vbc.exe
Token: SeProfSingleProcessPrivilege	2772	vbc.exe
Token: SeIncBasePriorityPrivilege	2772	vbc.exe
Token: SeCreatePagefilePrivilege	2772	vbc.exe
Token: SeBackupPrivilege	2772	vbc.exe
Token: SeRestorePrivilege	2772	vbc.exe
Token: SeShutdownPrivilege	2772	vbc.exe
Token: SeDebugPrivilege	2772	vbc.exe
Token: SeSystemEnvironmentPrivilege	2772	vbc.exe
Token: SeChangeNotifyPrivilege	2772	vbc.exe
Token: SeRemoteShutdownPrivilege	2772	vbc.exe
Token: SeUndockPrivilege	2772	vbc.exe
Token: SeManageVolumePrivilege	2772	vbc.exe
Token: SeImpersonatePrivilege	2772	vbc.exe
Token: SeCreateGlobalPrivilege	2772	vbc.exe
Token: 33	2772	vbc.exe
Token: 34	2772	vbc.exe
Token: 35	2772	vbc.exe
Token: 36	2772	vbc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2772	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 3860 wrote to memory of 2772	3860	JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe	87
PID 2772 wrote to memory of 4520	2772	vbc.exe	89
PID 2772 wrote to memory of 4520	2772	vbc.exe	89
PID 2772 wrote to memory of 4520	2772	vbc.exe	89
PID 2772 wrote to memory of 4296	2772	vbc.exe	90
PID 2772 wrote to memory of 4296	2772	vbc.exe	90
PID 2772 wrote to memory of 4296	2772	vbc.exe	90
PID 4296 wrote to memory of 1812	4296	cmd.exe	93
PID 4296 wrote to memory of 1812	4296	cmd.exe	93
PID 4296 wrote to memory of 1812	4296	cmd.exe	93
PID 4520 wrote to memory of 4396	4520	cmd.exe	94
PID 4520 wrote to memory of 4396	4520	cmd.exe	94
PID 4520 wrote to memory of 4396	4520	cmd.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4396	attrib.exe
1812	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4708d66f6f8496ecf88dd0ac1680dacd.exe"
1⤵
- Adds Run key to start application
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3860
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4520
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4396
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4296
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:1812

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

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\tmpcmd.bat

Filesize
62B

MD5
c6abd7a109bb37ab773b9e79b91b7741

SHA1
7933b8795914b27483d2afed35b3830e8bf5bdb6

SHA256
8bc84b3ddfd9c295f555926bf1c311be423732423c585ca90796cdee7a245629

SHA512
35d14c9b7366a4737e3685223d55d85c583c7fbe73274577424dc8d9960cc78c79a80a8b42a62f6d9d9962ddd60cf2a332411d4ac18196258dc9d5b0b575e3dc

Download Submit
memory/2772-36-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-29-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-5-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-8-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-10-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-11-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-13-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-43-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-14-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-25-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-24-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-22-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-23-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-42-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-41-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-27-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-31-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-30-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-28-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-32-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-33-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-34-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-35-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-40-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-37-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-38-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/2772-39-0x0000000000400000-0x00000000004D8000-memory.dmp

Filesize
864KB

Download
memory/3860-0-0x0000000075382000-0x0000000075383000-memory.dmp

Filesize
4KB

Download
memory/3860-2-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download
memory/3860-1-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download
memory/3860-12-0x0000000075380000-0x0000000075931000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads