60a756d88d9d3cbddd501cbff371822e4eac4ab7730e71dfe766e545f616cea9

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 19:31

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General

Target

2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe
Size

46KB
MD5

651f84bc886a88220e14e574378a82fa
SHA1

82dac98da553cb07ebab99c73cf35d47a1b4d57f
SHA256

60a756d88d9d3cbddd501cbff371822e4eac4ab7730e71dfe766e545f616cea9
SHA512

468605ab48a022e988995073ad3f87e666e497c79f94389505d32e5c9085412fb4c613a5fb162c77f59775961c82b37760aa7645a41d2a2832e6dd139228eeb8
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSS/hJ8:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+t

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002312d-13.dat	CryptoLocker_rule2
behavioral2/memory/4376-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a00000002312d-13.dat	CryptoLocker_set1
behavioral2/memory/4376-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	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 4376 wrote to memory of 4492	4376	2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe	88
PID 4376 wrote to memory of 4492	4376	2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe	88
PID 4376 wrote to memory of 4492	4376	2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_651f84bc886a88220e14e574378a82fa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4376
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4492

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

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Downloads

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

Filesize
46KB

MD5
5b11eeda74700df771bd4658f98435aa

SHA1
bc38f99675b43dcee447c2da01215a9f27ec164c

SHA256
d44d471098e251148fe51b08730ddb7de5fff5e59027df3744df904bd7dc5508

SHA512
953e5bec4252fe6e4fbd751d3d5e1c5f4cbb4604ef72cf38beaad8b466c2a7aae74250ff44ccc373ebb9b4d31f566ab5cea165f72165f6061549864933d97b08

Download Submit
memory/4376-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4376-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4376-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4376-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4376-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4492-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/4492-21-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download