dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1

General

Target

dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Size

55KB
MD5

d347b62257f8b88a1e6939b32cec099b
SHA1

5f0563e7b4eb3291e761b61c2d18f9cd2c60db7a
SHA256

dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1
SHA512

d97456f9ddbf4624bc3527222de398808715b36fe62a9f416929f67f5bedf0e95ed6948b8f81ec782137219410c39cdf0c989cb0864eed741cba4294b98a7a6f
SSDEEP

1536:V3cpyORJLuB4P4AJJv4Romu/xtKGR8QzG852ncgt:V3c1fP4AJJv45GfbG8kb

Score

10^/10

evasion

Malware Config

Signatures

Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

Loads dropped DLL 1 IoCs

pid	Process
4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Microsoft1\Internat Explorer\Desktop.ini	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft1\Internat Explorer\target.lnk	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
File opened for modification	C:\Program Files (x86)\Microsoft1\Internat Explorer	attrib.exe
File opened for modification	C:\Program Files (x86)\Microsoft1\Internat Explorer\Desktop.ini	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

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

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\DefaultIcon	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\DefaultIcon\ = "%1"	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open\command	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\ogfile\shell\open\command\ = "explorer \"C:\\Program Files (x86)\\Microsoft%S\\Internat Explorer\""	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.og	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.og\ = "ogfile"	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 1672	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	82
PID 4152 wrote to memory of 1672	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	82
PID 4152 wrote to memory of 1672	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	82
PID 4152 wrote to memory of 3276	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	85
PID 4152 wrote to memory of 3276	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	85
PID 4152 wrote to memory of 3276	4152	dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe	85

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1672	attrib.exe

C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
"C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe"
1⤵
- Modifies visibility of file extensions in Explorer
- Checks computer location settings
- Loads dropped DLL
- Drops desktop.ini file(s)
- Drops file in Program Files directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\SysWOW64\attrib.exe
  "C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft1\Internat Explorer" +s
  2⤵
  - Drops file in Program Files directory
  - Views/modifies file attributes
  PID:1672
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat" "
  2⤵
  PID:3276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsxF553.tmp\System.dll

Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat

Filesize
250B

MD5
ebe109caf9c0174fdd01eb071ca8b758

SHA1
66bba34ab14ce77f44115c1b9ad730bc39a156a6

SHA256
e4d283d0008531dcde84a748944ca7f5434560fa925b8eee639da0b7bb44acb5

SHA512
20a5a65823cc473bc262749368851a4bf6a1bee4eab7a9a12a54bf08f60d4fcfdb07b1906dce810d1e71b157ee15c8de8fda5d9a5938111f0e29e5eabce95e8c

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads