6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc

Analysis

max time kernel
129s
max time network
183s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
01/12/2022, 10:22

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General

Target

6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc.dll
Size

610KB
MD5

8cd355ccd75ac1b337831911d5a226e4
SHA1

30a08f5a2b57c59099d54f261fbcfc15b8dc5a8e
SHA256

6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc
SHA512

1f922771fcb5133bfb1b79ef6e978ce916fe6b1030fadb77a89e49241eefc9164d18a75218890e2260983dcc03e2f4a29159bc7f704bba86844049d19fbcdf94
SSDEEP

12288:TjG/5NwYkK19iOCr+TMoO30mYn0YaAsGhQHxM5DKTrH5eZQ2x:TjGAK19iOCr+TMoO30mYn0YaAstHxM51

Score

8^/10

persistence

Malware Config

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
3	1496	rundll32.exe
4	1496	rundll32.exe
5	1496	rundll32.exe
6	1496	rundll32.exe
7	1496	rundll32.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.Net CaLR\Parameters\ServiceDll = "C:\\Users\\Admin\\AppData\\Local\\Temp\\6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc.dll"	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2004	rundll32.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 1816 wrote to memory of 2004	1816	rundll32.exe	28
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 952 wrote to memory of 1496	952	svchost.exe	30
PID 2004 wrote to memory of 1492	2004	rundll32.exe	31
PID 2004 wrote to memory of 1492	2004	rundll32.exe	31
PID 2004 wrote to memory of 1492	2004	rundll32.exe	31
PID 2004 wrote to memory of 1492	2004	rundll32.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc.dll,#1
  2⤵
  - Sets DLL path for service in the registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c del "C:\Windows\SysWOW64\rundll32.exe" > nul
    3⤵
    PID:1492

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k ".Net CaLR"
1⤵
- Suspicious use of WriteProcessMemory
PID:952
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe c:\users\admin\appdata\local\temp\6782096df96e79c66161440a1226f01f2b63880eef6356cdd759f6408d28cbfc.dll, Launch
  2⤵
  - Blocklisted process makes network request
  PID:1496

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2004-55-0x0000000075511000-0x0000000075513000-memory.dmp

Filesize
8KB

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