bf7e7392e3037d49649e9092a90735553aba39ef1a53009fc443f531db8aec06

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15-04-2024 21:01

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General

Target

2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe
Size

40KB
MD5

d7faf9c96da5d811e3ef4690906da600
SHA1

69b4ee4998e737b790de10346b9240624705130b
SHA256

bf7e7392e3037d49649e9092a90735553aba39ef1a53009fc443f531db8aec06
SHA512

93cd9889ba90026136e875fbbcfd4d457f53e759cf06c033705fd99b485aa7e36f5e334ab52b594f1c71edd59ddb2981521be038151ca67533b234e1000afd17
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCp4b:X6QFElP6n+gJQMOtEvwDpjBmzDUp4b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97a-12.dat	CryptoLocker_set1

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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4104	asih.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 4104	2244	2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe	85
PID 2244 wrote to memory of 4104	2244	2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe	85
PID 2244 wrote to memory of 4104	2244	2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_d7faf9c96da5d811e3ef4690906da600_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
7af31b6c2d704135893277199cf0dab5

SHA1
03071cb1572b28ec5e6132256a8960d0002a160a

SHA256
6854f6c48473aead7f71a2f0f32c471342f1b55e45c40c653e58427cee681bde

SHA512
c752fe788575a2a653d8810d92121bdd61f16bc4e554f1064f5954d7f9a217ce2a8132aa95610058fee9d811d5549394e1185465e8d61bc494fee61b8f018be6

Download Submit
memory/2244-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2244-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/2244-2-0x00000000007A0000-0x00000000007A6000-memory.dmp

Filesize
24KB

Download
memory/4104-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4104-19-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download