dcrat | c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9

General

Target

JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe
Size

1.3MB
MD5

9ce0392a91d5fefe7a14f88b65ac4eb3
SHA1

7284b8c5712a761ad321510cfd14078ebf3a223c
SHA256

c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9
SHA512

8686531b4d818597ed4a00f0cda44961e5f807524a1e4dece3d298be6fd853005e26193bfe1bc067737576a6f1f4911a8bef54677472c33f60e90c9f0783735a
SSDEEP

24576:U2G/nvxW3Ww0t6TnzGmVBDh4+aknuRRZJND0gFJ4rD/IjC:UbA30GnzV/q+DnsXg

Score

10^/10

dcrat discovery execution infostealer rat

Malware Config

Signatures

DcRat
DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.
rat infostealer dcrat
Dcrat family
dcrat

Process spawned unexpected child process 6 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2580	580	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2820	580	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2296	580	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2776	580	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2540	580	schtasks.exe	35
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2576	580	schtasks.exe	35

DCRat payload 3 IoCs

Detects payload of DCRat, commonly dropped by NSIS installers.

rat

resource	yara_rule
behavioral1/files/0x000800000001686c-9.dat	dcrat
behavioral1/memory/792-13-0x0000000000860000-0x0000000000970000-memory.dmp	dcrat
behavioral1/memory/1364-28-0x0000000001360000-0x0000000001470000-memory.dmp	dcrat

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2712	powershell.exe
2932	powershell.exe
2940	powershell.exe

Executes dropped EXE 2 IoCs

pid	Process
792	DllCommonsvc.exe
1364	dwm.exe

Loads dropped DLL 2 IoCs

pid	Process
2812	cmd.exe
2812	cmd.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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2776	schtasks.exe
2540	schtasks.exe
2576	schtasks.exe
2580	schtasks.exe
2820	schtasks.exe
2296	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
792	DllCommonsvc.exe
792	DllCommonsvc.exe
792	DllCommonsvc.exe
2932	powershell.exe
2712	powershell.exe
2940	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	792	DllCommonsvc.exe
Token: SeDebugPrivilege	1364	dwm.exe
Token: SeDebugPrivilege	2932	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	2940	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 2980	2204	JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe	30
PID 2204 wrote to memory of 2980	2204	JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe	30
PID 2204 wrote to memory of 2980	2204	JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe	30
PID 2204 wrote to memory of 2980	2204	JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe	30
PID 2980 wrote to memory of 2812	2980	WScript.exe	32
PID 2980 wrote to memory of 2812	2980	WScript.exe	32
PID 2980 wrote to memory of 2812	2980	WScript.exe	32
PID 2980 wrote to memory of 2812	2980	WScript.exe	32
PID 2812 wrote to memory of 792	2812	cmd.exe	34
PID 2812 wrote to memory of 792	2812	cmd.exe	34
PID 2812 wrote to memory of 792	2812	cmd.exe	34
PID 2812 wrote to memory of 792	2812	cmd.exe	34
PID 792 wrote to memory of 2712	792	DllCommonsvc.exe	42
PID 792 wrote to memory of 2712	792	DllCommonsvc.exe	42
PID 792 wrote to memory of 2712	792	DllCommonsvc.exe	42
PID 792 wrote to memory of 2932	792	DllCommonsvc.exe	43
PID 792 wrote to memory of 2932	792	DllCommonsvc.exe	43
PID 792 wrote to memory of 2932	792	DllCommonsvc.exe	43
PID 792 wrote to memory of 2940	792	DllCommonsvc.exe	44
PID 792 wrote to memory of 2940	792	DllCommonsvc.exe	44
PID 792 wrote to memory of 2940	792	DllCommonsvc.exe	44
PID 792 wrote to memory of 1364	792	DllCommonsvc.exe	48
PID 792 wrote to memory of 1364	792	DllCommonsvc.exe	48
PID 792 wrote to memory of 1364	792	DllCommonsvc.exe	48

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c9e1ebe70a44c70824156d2fa8638dab3243d8b0fad44d3d031dfd95fc290df9.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2980
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\providercommon\1zu9dW.bat" "
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2812
  - - C:\providercommon\DllCommonsvc.exe
      "C:\providercommon\DllCommonsvc.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:792
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\providercommon\DllCommonsvc.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2712
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\MSOCache\All Users\dwm.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2932
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "powershell" -Command Add-MpPreference -ExclusionPath 'C:\Users\Public\Downloads\spoolsv.exe'
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:2940
    - - C:\MSOCache\All Users\dwm.exe
        
        "C:\MSOCache\All Users\dwm.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1364

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\dwm.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2580

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\MSOCache\All Users\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2820

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\MSOCache\All Users\dwm.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2296

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\Users\Public\Downloads\spoolsv.exe'" /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2776

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Users\Public\Downloads\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2540

C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'C:\Users\Public\Downloads\spoolsv.exe'" /rl HIGHEST /f
1⤵
- Process spawned unexpected child process
- Scheduled Task/Job: Scheduled Task
PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
7e8e74e61aa2ace0141d42c9b338de78

SHA1
56d79546aa2366acc661cb01026a80729a6d9ed6

SHA256
d7cc4e805df253174bf8e7d393a68217ea572455e678e970b6ac9806baeed322

SHA512
a63c6c4ebe7147e654583614233ca6e710570e528ee8937723bd23f8b17d04ced498ae4285f4db9a7993b940bd6e31e4e9300ce437859539a9842df41add653e

Download Submit
C:\providercommon\1zu9dW.bat

Filesize
36B

MD5
6783c3ee07c7d151ceac57f1f9c8bed7

SHA1
17468f98f95bf504cc1f83c49e49a78526b3ea03

SHA256
8ab782f0f327a2021530e7230d3aee8abbecb7eed59482a3a46e78b9e3862322

SHA512
c6012d4bfac1ed14d0fd9f0eabd0e1c3d647b343db292a907b246271d52a4b7469c809db43910ddba2e8c5045f9cb3d24d0af62d363281e6cb8b39ee94a183e8

Download Submit
C:\providercommon\yTUdeXjbLOhnrN32dgrxVg.vbe

Filesize
197B

MD5
8088241160261560a02c84025d107592

SHA1
083121f7027557570994c9fc211df61730455bb5

SHA256
2072cc9a4a3b84d4c5178ab41c5588eea7d0103e3928e34d64f17bf97f3d1cc1

SHA512
20d9369dd359315848ea30144383a0bb479d86059fdbc3b3256ac84f998193512feb3b1799ab663619920c99fe7e0ebba33ada31a3855094b956fcd351c90478

Download Submit
\providercommon\DllCommonsvc.exe

Filesize
1.0MB

MD5
bd31e94b4143c4ce49c17d3af46bcad0

SHA1
f8c51ff3ff909531d9469d4ba1bbabae101853ff

SHA256
b5199d3eb28e7de8ec4a5de66cb339a03d90b297e2292473badaab98ade15c63

SHA512
f96658bd19b672fd84038bd7e95c89e14f4e6f84e3ce9c6fe3216861a41203406148c6a809c2ab350d0d6c5919c845f619deb1fc9b1f1814dfce87e566bc2394

Download Submit
memory/792-13-0x0000000000860000-0x0000000000970000-memory.dmp

Filesize
1.1MB

Download
memory/792-14-0x0000000000620000-0x0000000000632000-memory.dmp

Filesize
72KB

Download
memory/792-15-0x0000000000640000-0x000000000064C000-memory.dmp

Filesize
48KB

Download
memory/792-16-0x0000000000630000-0x000000000063C000-memory.dmp

Filesize
48KB

Download
memory/792-17-0x0000000000650000-0x000000000065C000-memory.dmp

Filesize
48KB

Download
memory/1364-28-0x0000000001360000-0x0000000001470000-memory.dmp

Filesize
1.1MB

Download
memory/2712-39-0x000000001B4F0000-0x000000001B7D2000-memory.dmp

Filesize
2.9MB

Download
memory/2932-44-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads