a0ebed655c76dc37cf93b62042263ae665d39a03a5470a6c6d5cc962541da75d

Analysis

max time kernel
121s
max time network
127s
platform
windows7_x64
resource
win7-en-20211208
submitted
22/02/2022, 11:23

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General

Target
Rnfolthv.exe
Size 108KB
Sample220222-ng5awsgca2
SHA256 a0ebed655c76dc37cf93b62042263ae665d39a03a5470a6c6d5cc962541da75d
MD5 ba01c389c3d9e89614a6e2677277da57
SHA1 54443616751d3c3c3c612587424b48fbb500b97c
SHA512 c676a0ce520e983866e73ea8cdb02eb6ce96463d05789226f0b2cae8f3b053c1a7cbdc953483b0148a58a3700934f4d6e61ff781def7ab06bede6deb9b96b005
MD5 SHA1 SHA512

Score

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1416	1624	WerFault.exe	18

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
564	PING.EXE

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1416	WerFault.exe
1416	WerFault.exe
1416	WerFault.exe
1416	WerFault.exe
1416	WerFault.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1624	Rnfolthv.exe
Token: SeDebugPrivilege	1416	WerFault.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1624 wrote to memory of 384	1624	Rnfolthv.exe	27
PID 1624 wrote to memory of 384	1624	Rnfolthv.exe	27
PID 1624 wrote to memory of 384	1624	Rnfolthv.exe	27
PID 1624 wrote to memory of 384	1624	Rnfolthv.exe	27
PID 384 wrote to memory of 564	384	cmd.exe	29
PID 384 wrote to memory of 564	384	cmd.exe	29
PID 384 wrote to memory of 564	384	cmd.exe	29
PID 384 wrote to memory of 564	384	cmd.exe	29
PID 1624 wrote to memory of 1416	1624	Rnfolthv.exe	32
PID 1624 wrote to memory of 1416	1624	Rnfolthv.exe	32
PID 1624 wrote to memory of 1416	1624	Rnfolthv.exe	32
PID 1624 wrote to memory of 1416	1624	Rnfolthv.exe	32

C:\Users\Admin\AppData\Local\Temp\Rnfolthv.exe
"C:\Users\Admin\AppData\Local\Temp\Rnfolthv.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1624
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ping yahoo.com
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:384
- - C:\Windows\SysWOW64\PING.EXE
    ping yahoo.com
    3⤵
    - Runs ping.exe
    PID:564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 1312
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1416

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1416-59-0x0000000000900000-0x0000000000901000-memory.dmp

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memory/1624-55-0x000000007412E000-0x000000007412F000-memory.dmp

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memory/1624-56-0x0000000000160000-0x0000000000180000-memory.dmp

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memory/1624-57-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

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memory/1624-58-0x0000000001E50000-0x0000000001E51000-memory.dmp

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