ff1caada5738fcb6cd6e4e83841e2bdfe49cbf767d7d4d6f1fd437e56b702a89

General

Target

996887ad773945a7884931c5f1ff5c94.exe
Size

61KB
MD5

996887ad773945a7884931c5f1ff5c94
SHA1

bbe87a1764221a20f8f35b4291ddb5cce7a8f468
SHA256

ff1caada5738fcb6cd6e4e83841e2bdfe49cbf767d7d4d6f1fd437e56b702a89
SHA512

7ec3b233032423ce0d09dbb23b31af24f82469b07e0ff11b728bcbc3e22bf95e829a14565fe8b8199d461ed431f3b2d19146ff8cf934c92fb2eb650266a0dfaa
SSDEEP

1536:B4lqiNHnPSMQQ+Z45SNTxdBlsZr48ECzJP0xBt7haC:GaMQ/7NdrlxaFPkt9

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 2 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\996887ad773945a7884931c5f1ff5c94.exe\""	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\996887ad773945a7884931c5f1ff5c94.exe\""	regedit.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	996887ad773945a7884931c5f1ff5c94.exe

Executes dropped EXE 1 IoCs

pid	Process
4012	msdtr.exe

Enumerates connected drives 3 TTPs 25 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\g:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\y:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\a:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\f:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\h:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\l:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\r:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\u:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\d:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\p:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\v:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\t:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\x:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\z:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\j:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\m:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\b:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\e:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\i:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\k:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\n:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\w:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\o:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\q:	996887ad773945a7884931c5f1ff5c94.exe
File opened (read-only)	\??\s:	996887ad773945a7884931c5f1ff5c94.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4444	4012	WerFault.exe	84

Runs .reg file with regedit 1 IoCs

pid	Process
5100	regedit.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 5100	3952	996887ad773945a7884931c5f1ff5c94.exe	83
PID 3952 wrote to memory of 5100	3952	996887ad773945a7884931c5f1ff5c94.exe	83
PID 3952 wrote to memory of 5100	3952	996887ad773945a7884931c5f1ff5c94.exe	83
PID 3952 wrote to memory of 4012	3952	996887ad773945a7884931c5f1ff5c94.exe	84
PID 3952 wrote to memory of 4012	3952	996887ad773945a7884931c5f1ff5c94.exe	84
PID 3952 wrote to memory of 4012	3952	996887ad773945a7884931c5f1ff5c94.exe	84

C:\Users\Admin\AppData\Local\Temp\996887ad773945a7884931c5f1ff5c94.exe
"C:\Users\Admin\AppData\Local\Temp\996887ad773945a7884931c5f1ff5c94.exe"
1⤵
- Modifies visiblity of hidden/system files in Explorer
- Enumerates connected drives
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Windows\SysWOW64\regedit.exe
  regedit.exe /s C:\Users\Admin\AppData\Local\Temp\aaa.reg
  2⤵
  - Modifies WinLogon for persistence
  - Runs .reg file with regedit
  PID:5100
- C:\Users\Admin\AppData\Local\Temp\msdtr.exe
  C:\Users\Admin\AppData\Local\Temp\msdtr.exe
  2⤵
  - Executes dropped EXE
  PID:4012
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4012 -s 532
    3⤵
    - Program crash
    PID:4444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 180 -p 4012 -ip 4012
1⤵
PID:4804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\aaa.reg

Filesize
413B

MD5
e62423d7be4ca6661ca629d6b7a9a104

SHA1
ae0e34911292701ff9c94869364a36b98ef76fed

SHA256
11fa728742f4d51b25bc1e16fc77db63226fc702c10b5e3c6f098f562fdae64c

SHA512
9de8f6b68f28637ef4844df8914b926a3d7e90e3013b4aa4e871eda3e5d8d9525747541061f9e46528c1201a10bab520c763ad2dc5e841001eb5b24f077f79c7

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C:\Users\Admin\AppData\Local\Temp\msdtr.exe

Filesize
41KB

MD5
4c3dce52edaec8f5e3a7a8775623d669

SHA1
e54587845bb153cade4c025d6519ace63d1ac92f

SHA256
b4a33369d9f2b2a43196229106bd21bb4cada7aebf662fa369d65101856df9a9

SHA512
70b1f49d8cc39272ef96a11c19d2a2a710bf976402c7091a47b396c476c05b113aadf8be45300477774a7ec8cc2d2e56ba953ea0a181dc934e2b766634dfcc9f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads