b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

General

Target

b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe
Size

358KB
MD5

2c8f50f3d59e02bd80a14a6c664b9f0a
SHA1

df76e105f9d3fca6e3a932537af9cb070a97a313
SHA256

b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3
SHA512

69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe
SSDEEP

6144:CYvnOeCcHE6jM5J1IeKHJg+VTQ1CRUA165UerubHCmNTsf4lJ:CYv3CyUJOeNgTgJi6VKrCi68J

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1984	servar.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
756	netsh.exe

Loads dropped DLL 2 IoCs

pid	Process
856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe
856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\b99f8a74343617249242b199cdc2b55b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\servar.exe\" .."	servar.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\b99f8a74343617249242b199cdc2b55b = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\servar.exe\" .."	servar.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ghh = "C:\\Users\\Admin\\AppData\\Local\\Temp\\.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\ghh = "C:\\Users\\Admin\\AppData\\Local\\Temp\\.exe"	reg.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\security.config.cch.new	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe
File created	C:\Windows\Microsoft.NET\Framework\v2.0.50727\config\enterprisesec.config.cch.new	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.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 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe
Token: 33	1984	servar.exe
Token: SeIncBasePriorityPrivilege	1984	servar.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 1748	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	27
PID 856 wrote to memory of 1748	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	27
PID 856 wrote to memory of 1748	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	27
PID 856 wrote to memory of 1748	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	27
PID 1748 wrote to memory of 1756	1748	cmd.exe	29
PID 1748 wrote to memory of 1756	1748	cmd.exe	29
PID 1748 wrote to memory of 1756	1748	cmd.exe	29
PID 1748 wrote to memory of 1756	1748	cmd.exe	29
PID 856 wrote to memory of 1984	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	30
PID 856 wrote to memory of 1984	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	30
PID 856 wrote to memory of 1984	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	30
PID 856 wrote to memory of 1984	856	b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe	30
PID 1984 wrote to memory of 1296	1984	servar.exe	32
PID 1984 wrote to memory of 1296	1984	servar.exe	32
PID 1984 wrote to memory of 1296	1984	servar.exe	32
PID 1984 wrote to memory of 1296	1984	servar.exe	32
PID 1296 wrote to memory of 1496	1296	cmd.exe	33
PID 1296 wrote to memory of 1496	1296	cmd.exe	33
PID 1296 wrote to memory of 1496	1296	cmd.exe	33
PID 1296 wrote to memory of 1496	1296	cmd.exe	33
PID 1984 wrote to memory of 756	1984	servar.exe	34
PID 1984 wrote to memory of 756	1984	servar.exe	34
PID 1984 wrote to memory of 756	1984	servar.exe	34
PID 1984 wrote to memory of 756	1984	servar.exe	34

C:\Users\Admin\AppData\Local\Temp\b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe
"C:\Users\Admin\AppData\Local\Temp\b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ghh" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\reg.exe
    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ghh" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\.exe
    3⤵
    - Adds Run key to start application
    PID:1756
- C:\Users\Admin\AppData\Local\Temp\servar.exe
  "C:\Users\Admin\AppData\Local\Temp\servar.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1984
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ghh" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\.exe
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1296
  - - C:\Windows\SysWOW64\reg.exe
      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "ghh" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\.exe
      4⤵
      Adds Run key to start application
      PID:1496
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\servar.exe" "servar.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:756

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\.exe

Filesize
358KB

MD5
2c8f50f3d59e02bd80a14a6c664b9f0a

SHA1
df76e105f9d3fca6e3a932537af9cb070a97a313

SHA256
b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

SHA512
69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe

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

Filesize
358KB

MD5
2c8f50f3d59e02bd80a14a6c664b9f0a

SHA1
df76e105f9d3fca6e3a932537af9cb070a97a313

SHA256
b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

SHA512
69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe

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

Filesize
358KB

MD5
2c8f50f3d59e02bd80a14a6c664b9f0a

SHA1
df76e105f9d3fca6e3a932537af9cb070a97a313

SHA256
b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

SHA512
69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe

Download Submit
\Users\Admin\AppData\Local\Temp\servar.exe

Filesize
358KB

MD5
2c8f50f3d59e02bd80a14a6c664b9f0a

SHA1
df76e105f9d3fca6e3a932537af9cb070a97a313

SHA256
b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

SHA512
69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe

Download Submit
\Users\Admin\AppData\Local\Temp\servar.exe

Filesize
358KB

MD5
2c8f50f3d59e02bd80a14a6c664b9f0a

SHA1
df76e105f9d3fca6e3a932537af9cb070a97a313

SHA256
b4d0ce354cada86d495bf9afe38b3285d4bf74ed4759241a9b58f8718ec67da3

SHA512
69a3fb83469a1cb6dcd566666dc9071da324cf90b74600a48ed011752602b4cb7a529c433c1a0605cbded72fe8b5c15ccfc6d9d5d519172208d9505913d570fe

Download Submit
memory/856-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/856-55-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/856-68-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/1984-65-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download
memory/1984-71-0x0000000074A50000-0x0000000074FFB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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