revengerat | a118f361223ac18069b6aeb89baec7e918a99b42ea171250c3e9bc4c314a8b2e

General

Target

91d6aa195fef506ad74e4671dfe30eb6.exe
Size

17KB
MD5

91d6aa195fef506ad74e4671dfe30eb6
SHA1

6bdcb490bd82e22acde9742f4d08b205ce1660ec
SHA256

a118f361223ac18069b6aeb89baec7e918a99b42ea171250c3e9bc4c314a8b2e
SHA512

401534e04f0511d6efaac2ff5cdee83229262fe90e3e104513b380fcf7cb9f43d1f672630f08cfbfd110ec564d5756f64aefad22caaa3a4b426f79dabf56a035

Score

10^/10

revengerat guest persistence stealer trojan

Malware Config

Extracted

Family

revengerat

Botnet

Guest

C2

127.0.0.1:333

127.0.0.1:16025

4.tcp.ngrok.io:333

4.tcp.ngrok.io:16025

Mutex

RV_MUTEX

Signatures

RevengeRAT
Remote-access trojan with a wide range of capabilities.
trojan revengerat

RevengeRat Executable 2 IoCs

stealer

Processes:

resource	yara_rule
C:\Windows\System32\Cliessvnt.exe	revengerat
C:\Windows\system32\Cliessvnt.exe	revengerat

Executes dropped EXE 1 IoCs

Processes:

Cliessvnt.exe

pid process

840 Cliessvnt.exe

pid	process
840	Cliessvnt.exe

Drops startup file 1 IoCs

Processes:

Cliessvnt.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsXP.URL	Cliessvnt.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Cliessvnt.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows\CurrentVersion\Run\Cslient = "C:\\Windows\\system32\\Cliessvnt.exe"	Cliessvnt.exe

Drops file in System32 directory 4 IoCs

Processes:

91d6aa195fef506ad74e4671dfe30eb6.exeCliessvnt.exe

description	ioc	process
File created	C:\Windows\system32\Cliessvnt.exe	91d6aa195fef506ad74e4671dfe30eb6.exe
File opened for modification	C:\Windows\system32\Cliessvnt.exe	91d6aa195fef506ad74e4671dfe30eb6.exe
File opened for modification	C:\Windows\system32\Cliessvnt.exe	Cliessvnt.exe
File created	C:\Windows\system32\Cliessvnt.exe	Cliessvnt.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Cliessvnt.exe91d6aa195fef506ad74e4671dfe30eb6.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	Cliessvnt.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	91d6aa195fef506ad74e4671dfe30eb6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	91d6aa195fef506ad74e4671dfe30eb6.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\CENTRALPROCESSOR\0	Cliessvnt.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

91d6aa195fef506ad74e4671dfe30eb6.exeCliessvnt.exe

description pid process

Token: SeDebugPrivilege 2032 91d6aa195fef506ad74e4671dfe30eb6.exe
Token: SeDebugPrivilege 840 Cliessvnt.exe

description	pid	process
Token: SeDebugPrivilege	2032	91d6aa195fef506ad74e4671dfe30eb6.exe
Token: SeDebugPrivilege	840	Cliessvnt.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

91d6aa195fef506ad74e4671dfe30eb6.exe

description	pid	process	target process
PID 2032 wrote to memory of 840	2032	91d6aa195fef506ad74e4671dfe30eb6.exe	Cliessvnt.exe
PID 2032 wrote to memory of 840	2032	91d6aa195fef506ad74e4671dfe30eb6.exe	Cliessvnt.exe
PID 2032 wrote to memory of 840	2032	91d6aa195fef506ad74e4671dfe30eb6.exe	Cliessvnt.exe

C:\Users\Admin\AppData\Local\Temp\91d6aa195fef506ad74e4671dfe30eb6.exe
"C:\Users\Admin\AppData\Local\Temp\91d6aa195fef506ad74e4671dfe30eb6.exe"
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\system32\Cliessvnt.exe
  "C:\Windows\system32\Cliessvnt.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Drops file in System32 directory
  - Checks processor information in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:840

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\System32\Cliessvnt.exe

MD5
91d6aa195fef506ad74e4671dfe30eb6

SHA1
6bdcb490bd82e22acde9742f4d08b205ce1660ec

SHA256
a118f361223ac18069b6aeb89baec7e918a99b42ea171250c3e9bc4c314a8b2e

SHA512
401534e04f0511d6efaac2ff5cdee83229262fe90e3e104513b380fcf7cb9f43d1f672630f08cfbfd110ec564d5756f64aefad22caaa3a4b426f79dabf56a035

Download Submit
C:\Windows\system32\Cliessvnt.exe

MD5
91d6aa195fef506ad74e4671dfe30eb6

SHA1
6bdcb490bd82e22acde9742f4d08b205ce1660ec

SHA256
a118f361223ac18069b6aeb89baec7e918a99b42ea171250c3e9bc4c314a8b2e

SHA512
401534e04f0511d6efaac2ff5cdee83229262fe90e3e104513b380fcf7cb9f43d1f672630f08cfbfd110ec564d5756f64aefad22caaa3a4b426f79dabf56a035

Download Submit
memory/840-56-0x0000000000000000-mapping.dmp

Download
memory/840-59-0x000007FEF25F0000-0x000007FEF3686000-memory.dmp

Filesize
16.6MB

Download
memory/840-60-0x0000000001D50000-0x0000000001D52000-memory.dmp

Filesize
8KB

Download
memory/2032-54-0x000007FEF2780000-0x000007FEF3816000-memory.dmp

Filesize
16.6MB

Download
memory/2032-55-0x0000000000B10000-0x0000000000B12000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads