f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc

General

Target

f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
Size

506KB
MD5

70d62efe37d69761b0a8e6464e5d8eba
SHA1

9889e3694eb030667bccb25de13512f0e5b7e950
SHA256

f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc
SHA512

cc285382386b488a547cbf3b3ad32cefe187d824a38267eca25f1f0348054e4df4c0525ae500a447515eb7cfbd9b34c2b530d9473f433c54863939740656c01c
SSDEEP

12288:YnZIwuwZ44xyrlEYcXtFZB3gKGZ5jSEAgBGY62XWuuB1:aIvH4xZBwrjSEL6Xr

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\taskmgr.exe"	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\taskmgr.exe"	taskmgr.exe

Executes dropped EXE 2 IoCs

pid	Process
2544	taskmgr.exe
204	taskmgr.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2224	netsh.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2028-132-0x0000000000400000-0x00000000004C1000-memory.dmp	upx
behavioral2/memory/2028-136-0x0000000000400000-0x00000000004C1000-memory.dmp	upx
behavioral2/files/0x0008000000022f5a-142.dat	upx
behavioral2/files/0x0008000000022f5a-144.dat	upx
behavioral2/files/0x0008000000022f5a-147.dat	upx
behavioral2/memory/2544-149-0x0000000000400000-0x00000000004C1000-memory.dmp	upx

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
5	checkip.dyndns.com

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/memory/2028-136-0x0000000000400000-0x00000000004C1000-memory.dmp	autoit_exe
behavioral2/memory/2544-149-0x0000000000400000-0x00000000004C1000-memory.dmp	autoit_exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2028 set thread context of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2544 set thread context of 204	2544	taskmgr.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 use of SetWindowsHookEx 2 IoCs

pid	Process
2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
204	taskmgr.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2028 wrote to memory of 2616	2028	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	83
PID 2616 wrote to memory of 2224	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	84
PID 2616 wrote to memory of 2224	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	84
PID 2616 wrote to memory of 2224	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	84
PID 2616 wrote to memory of 2544	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	85
PID 2616 wrote to memory of 2544	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	85
PID 2616 wrote to memory of 2544	2616	f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe	85
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87
PID 2544 wrote to memory of 204	2544	taskmgr.exe	87

C:\Users\Admin\AppData\Local\Temp\f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
"C:\Users\Admin\AppData\Local\Temp\f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
  "C:\Users\Admin\AppData\Local\Temp\f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2616
- - C:\Windows\SysWOW64\netsh.exe
    netsh advfirewall firewall add rule name="TaskMgr" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe" enable=yes
    3⤵
    - Modifies Windows Firewall
    PID:2224
- - C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe
    /d/C:\Users\Admin\AppData\Local\Temp\f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2544
  - - C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe"
      4⤵
      Modifies WinLogon for persistence
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\8YLPV06K\shutdown[1].htm

Filesize
1024B

MD5
14c2410a3050d3deeea7be9432273e6e

SHA1
09fe5a5a5f11508aa97e200f5c40ce2983ce4997

SHA256
cac1cbb5a71b7e809bd051bd94b397291ecb51b645edc1e7475b015b0f48fcd8

SHA512
da3b114640292caed18207ab9c6b3e6c305828f7e76370dc378ad1fce77ba236d1b8932a91860b0c4e882d4b5b66e0aafff2e33b7f305aa01dc860f6b09bc2bd

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe

Filesize
506KB

MD5
70d62efe37d69761b0a8e6464e5d8eba

SHA1
9889e3694eb030667bccb25de13512f0e5b7e950

SHA256
f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc

SHA512
cc285382386b488a547cbf3b3ad32cefe187d824a38267eca25f1f0348054e4df4c0525ae500a447515eb7cfbd9b34c2b530d9473f433c54863939740656c01c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe

Filesize
506KB

MD5
70d62efe37d69761b0a8e6464e5d8eba

SHA1
9889e3694eb030667bccb25de13512f0e5b7e950

SHA256
f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc

SHA512
cc285382386b488a547cbf3b3ad32cefe187d824a38267eca25f1f0348054e4df4c0525ae500a447515eb7cfbd9b34c2b530d9473f433c54863939740656c01c

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\taskmgr.exe

Filesize
506KB

MD5
70d62efe37d69761b0a8e6464e5d8eba

SHA1
9889e3694eb030667bccb25de13512f0e5b7e950

SHA256
f26a9329859fecaecc84789373c1d821af014105b270532c6976595ecd17cbbc

SHA512
cc285382386b488a547cbf3b3ad32cefe187d824a38267eca25f1f0348054e4df4c0525ae500a447515eb7cfbd9b34c2b530d9473f433c54863939740656c01c

Download Submit
memory/204-154-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/204-152-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2028-136-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2028-132-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2544-149-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2616-139-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2616-143-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/2616-134-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download

Analysis

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