c890bc2e899bdb9c2a7cbe9ab52b852c5ea6832e44615f2afc66ab47925866d2

General

Target

UD_PO_000681.exe
Size

483KB
MD5

24a8d8c071bbb496ba8e64e7817fd6c9
SHA1

f40194270a9475aeb044a062bd7ef9376d8ed857
SHA256

c890bc2e899bdb9c2a7cbe9ab52b852c5ea6832e44615f2afc66ab47925866d2
SHA512

c4dcbb0b0fdc7469c6e5abc038867f3c65e179a3692dc884d7713db20c2fdefb4f96d5369210aedf807008cbe3821b05fb2a162c45a603aa0c68d56962d4e9a0

Score

8^/10

Malware Config

Signatures

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1612	UD_PO_000681.exe
1612	UD_PO_000681.exe
1612	UD_PO_000681.exe
1860	asnsn.exe
1860	asnsn.exe
1860	asnsn.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1612 wrote to memory of 1540	1612	UD_PO_000681.exe	24
PID 1612 wrote to memory of 1540	1612	UD_PO_000681.exe	24
PID 1612 wrote to memory of 1540	1612	UD_PO_000681.exe	24
PID 1612 wrote to memory of 1540	1612	UD_PO_000681.exe	24
PID 1540 wrote to memory of 1716	1540	cmd.exe	26
PID 1540 wrote to memory of 1716	1540	cmd.exe	26
PID 1540 wrote to memory of 1716	1540	cmd.exe	26
PID 1540 wrote to memory of 1716	1540	cmd.exe	26
PID 1612 wrote to memory of 1860	1612	UD_PO_000681.exe	27
PID 1612 wrote to memory of 1860	1612	UD_PO_000681.exe	27
PID 1612 wrote to memory of 1860	1612	UD_PO_000681.exe	27
PID 1612 wrote to memory of 1860	1612	UD_PO_000681.exe	27
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28
PID 1860 wrote to memory of 1928	1860	asnsn.exe	28

Loads dropped DLL 2 IoCs

pid	Process
1612	UD_PO_000681.exe
1860	asnsn.exe

Executes dropped EXE 2 IoCs

pid	Process
1860	asnsn.exe
1928	AddInProcess32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1860 set thread context of 1928	1860	asnsn.exe	28

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Adds Run entry to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\dnfnf = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\asnsn.exe"	reg.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1612	UD_PO_000681.exe
Token: SeDebugPrivilege	1860	asnsn.exe
Token: SeDebugPrivilege	1928	AddInProcess32.exe

C:\Users\Admin\AppData\Local\Temp\UD_PO_000681.exe
"C:\Users\Admin\AppData\Local\Temp\UD_PO_000681.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:1612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v dnfnf /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\asnsn.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1540
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v dnfnf /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\asnsn.exe"
    3⤵
    - Adds Run entry to start application
    PID:1716
- C:\Users\Admin\AppData\Roaming\asnsn.exe
  "C:\Users\Admin\AppData\Roaming\asnsn.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Loads dropped DLL
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  PID:1860
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Web Service

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1928-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1928-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1928-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

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