1c1198c6de9cf636d4dc103add73a59ba3101ae38954f20f0ec6ed9b8c563dbd

General

Target

Acwpn.exe
Size

7KB
MD5

5828f5213c4721e4118b3e57388ff2a5
SHA1

6737cd48c485ed00f64d56f2996cb0a4b3e16db8
SHA256

1c1198c6de9cf636d4dc103add73a59ba3101ae38954f20f0ec6ed9b8c563dbd
SHA512

e90cc6a7debeb334a5569f0a69c3b1ef16d8a1b43ef3decc10bff8ae0e510e3e4d3ae8ca838fd4bc090aaece07c6ae0ab5a38f27aaff86e17e322b3e290cf428
SSDEEP

96:wUUIQg0soU3QSQKCJdsYB3TtmXdtEkdpBxNbFnU:wUUIPDQdsYF0tzbHk

Score

7^/10

collection

Malware Config

Signatures

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-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	Acwpn.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
22	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4244 set thread context of 4020	4244	Acwpn.exe	87

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
784	powershell.exe
784	powershell.exe
4020	MSBuild.exe
4020	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	4244	Acwpn.exe
Token: SeDebugPrivilege	784	powershell.exe
Token: SeDebugPrivilege	4020	MSBuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4244 wrote to memory of 784	4244	Acwpn.exe	79
PID 4244 wrote to memory of 784	4244	Acwpn.exe	79
PID 4244 wrote to memory of 784	4244	Acwpn.exe	79
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87
PID 4244 wrote to memory of 4020	4244	Acwpn.exe	87

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\Acwpn.exe
"C:\Users\Admin\AppData\Local\Temp\Acwpn.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4244
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:784
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:4020

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/784-140-0x00000000073F0000-0x0000000007A6A000-memory.dmp

Filesize
6.5MB

Download
memory/784-136-0x0000000004EC0000-0x00000000054E8000-memory.dmp

Filesize
6.2MB

Download
memory/784-139-0x0000000005D10000-0x0000000005D2E000-memory.dmp

Filesize
120KB

Download
memory/784-135-0x0000000002740000-0x0000000002776000-memory.dmp

Filesize
216KB

Download
memory/784-141-0x0000000006200000-0x000000000621A000-memory.dmp

Filesize
104KB

Download
memory/784-137-0x00000000054F0000-0x0000000005556000-memory.dmp

Filesize
408KB

Download
memory/784-138-0x00000000056D0000-0x0000000005736000-memory.dmp

Filesize
408KB

Download
memory/4020-143-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4020-144-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/4020-145-0x0000000005810000-0x00000000058AC000-memory.dmp

Filesize
624KB

Download
memory/4020-146-0x0000000006810000-0x00000000069D2000-memory.dmp

Filesize
1.8MB

Download
memory/4020-147-0x00000000069E0000-0x0000000006A72000-memory.dmp

Filesize
584KB

Download
memory/4020-148-0x0000000006750000-0x000000000675A000-memory.dmp

Filesize
40KB

Download
memory/4244-133-0x00000000062F0000-0x0000000006312000-memory.dmp

Filesize
136KB

Download
memory/4244-132-0x00000000000F0000-0x00000000000F8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing