ee3ee7281e5212dce46722ae11d7ee506227ec7d209d842c75ade53e526684fe

General

Target

Client/Client.exe
Size

59.8MB
MD5

07185b28ac6e7b8a49d452ededb9a6f8
SHA1

2390ff463d4cb37799f46081f381fc7a8551a959
SHA256

d30a1b9d067bac02d43e660d0c3924e44fb64becef529a86b9eb0799312d97be
SHA512

7f8852e4b8db80c22370ee62d49c1e5871551dd7e4a0ab56d5f7e1479ba9dffc1a11e0a92318c139322663f1c9c287ac8e0aecd9e0d758bd4ca8ccb46cb6d937
SSDEEP

786432:L9T/j0+mSyv3+gc5ibDB28+oFwjvYKM289vy3TOZ34wWIN34:L9T/j1mSyvf28+u289l4u

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2592	powershell.exe

Downloads MZ/PE file

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-1-5-21-3063565911-2056067323-3330884624-1000\Control Panel\International\Geo\Nation	rudpf2jr.bwn.exe

Executes dropped EXE 1 IoCs

pid	Process
3024	rudpf2jr.bwn.exe

Loads dropped DLL 1 IoCs

pid	Process
2708	Client.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2592	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2592	powershell.exe
Token: SeDebugPrivilege	3024	rudpf2jr.bwn.exe
Token: SeImpersonatePrivilege	3024	rudpf2jr.bwn.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 2592	2708	Client.exe	31
PID 2708 wrote to memory of 2592	2708	Client.exe	31
PID 2708 wrote to memory of 2592	2708	Client.exe	31
PID 2708 wrote to memory of 2592	2708	Client.exe	31
PID 2708 wrote to memory of 3024	2708	Client.exe	33
PID 2708 wrote to memory of 3024	2708	Client.exe	33
PID 2708 wrote to memory of 3024	2708	Client.exe	33
PID 2708 wrote to memory of 3024	2708	Client.exe	33

C:\Users\Admin\AppData\Local\Temp\Client\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client\Client.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ExecutionPolicy Bypass -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp'"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2592
- C:\Windows\Temp\rudpf2jr.bwn.exe
  "C:\\Windows\\Temp\rudpf2jr.bwn.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3024

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Temp\rudpf2jr.bwn.exe

Filesize
1.8MB

MD5
8e2766a1d5ffabdae6603d9dffc5d4bf

SHA1
45f1bedf90db66c5af35e80f93d8d0a6181485a5

SHA256
127a36b98ea43a374146a0dd7bef8a0323db12a6a74eff3290d3974a1f077714

SHA512
adc31e9fe214424f80604383be44b8d9ec9dfd8a5c968dd5b037f0df757e99bb071ceb0019bf98c6b169f7fe328db7fe84a7f1586504fc0e4281830279eb1ecd

Download Submit
memory/2592-32-0x0000000072D81000-0x0000000072D82000-memory.dmp

Filesize
4KB

Download
memory/2592-37-0x0000000072D80000-0x000000007332B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-36-0x0000000072D80000-0x000000007332B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-35-0x0000000072D80000-0x000000007332B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-34-0x0000000072D80000-0x000000007332B000-memory.dmp

Filesize
5.7MB

Download
memory/2592-33-0x0000000072D80000-0x000000007332B000-memory.dmp

Filesize
5.7MB

Download
memory/2708-9-0x0000000007BA0000-0x0000000007BF0000-memory.dmp

Filesize
320KB

Download
memory/2708-53-0x00000000082A0000-0x0000000008340000-memory.dmp

Filesize
640KB

Download
memory/2708-5-0x0000000007BA0000-0x0000000007BF0000-memory.dmp

Filesize
320KB

Download
memory/2708-4-0x0000000006A00000-0x0000000007600000-memory.dmp

Filesize
12.0MB

Download
memory/2708-0-0x0000000006A00000-0x0000000007600000-memory.dmp

Filesize
12.0MB

Download
memory/2708-10-0x0000000007A00000-0x0000000007A10000-memory.dmp

Filesize
64KB

Download
memory/2708-14-0x0000000007A00000-0x0000000007A10000-memory.dmp

Filesize
64KB

Download
memory/2708-15-0x0000000007C20000-0x0000000007C50000-memory.dmp

Filesize
192KB

Download
memory/2708-19-0x0000000007C20000-0x0000000007C50000-memory.dmp

Filesize
192KB

Download
memory/2708-20-0x0000000007C70000-0x0000000007C90000-memory.dmp

Filesize
128KB

Download
memory/2708-24-0x0000000007C70000-0x0000000007C90000-memory.dmp

Filesize
128KB

Download
memory/2708-38-0x0000000007E80000-0x0000000008000000-memory.dmp

Filesize
1.5MB

Download
memory/2708-58-0x0000000008510000-0x00000000086D0000-memory.dmp

Filesize
1.8MB

Download
memory/2708-29-0x0000000007E60000-0x0000000007E80000-memory.dmp

Filesize
128KB

Download
memory/2708-67-0x0000000008710000-0x0000000008750000-memory.dmp

Filesize
256KB

Download
memory/2708-63-0x0000000008710000-0x0000000008750000-memory.dmp

Filesize
256KB

Download
memory/2708-62-0x0000000008510000-0x00000000086D0000-memory.dmp

Filesize
1.8MB

Download
memory/2708-47-0x0000000008060000-0x00000000080A0000-memory.dmp

Filesize
256KB

Download
memory/2708-42-0x0000000007E80000-0x0000000008000000-memory.dmp

Filesize
1.5MB

Download
memory/2708-57-0x00000000082A0000-0x0000000008340000-memory.dmp

Filesize
640KB

Download
memory/2708-68-0x00000000087C0000-0x0000000008800000-memory.dmp

Filesize
256KB

Download
memory/2708-52-0x00000000081A0000-0x0000000008200000-memory.dmp

Filesize
384KB

Download
memory/2708-49-0x00000000081A0000-0x0000000008200000-memory.dmp

Filesize
384KB

Download
memory/2708-43-0x0000000008060000-0x00000000080A0000-memory.dmp

Filesize
256KB

Download
memory/2708-25-0x0000000007E60000-0x0000000007E80000-memory.dmp

Filesize
128KB

Download
memory/3024-96-0x000000013F030000-0x000000013F209000-memory.dmp

Filesize
1.8MB

Download
memory/3024-95-0x000000013F054000-0x000000013F055000-memory.dmp

Filesize
4KB

Download

Analysis

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