c6b8479f4f77bebdb712e81ebf55416ee4ca89c0452ff0473ecdc20648fa4e98

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
04-06-2024 11:58

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General

Target

2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe
Size

50KB
MD5

eaccf5f0bb099cf8396e253aa038dd47
SHA1

455f8e5a1ebad49ed7da5062c0c0894fe72673f8
SHA256

c6b8479f4f77bebdb712e81ebf55416ee4ca89c0452ff0473ecdc20648fa4e98
SHA512

4a0109df4232cd08ef8cd5f4882863683e0a7f0386d5d2f9e4986fe19f5f0531f5c64aeb7f44bb306cddbed7053fed3b5179b9613b0c01f54a8def344d4f9031
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vdXfxDB:X6QFElP6n+gJBMOtEvwDpjBtEdXfxDB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023383-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023383-12.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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1320	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 3088 wrote to memory of 1320	3088	2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe	85
PID 3088 wrote to memory of 1320	3088	2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe	85
PID 3088 wrote to memory of 1320	3088	2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_eaccf5f0bb099cf8396e253aa038dd47_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3088
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1320

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
50KB

MD5
a302fe24653b4665b41f2b7e3048e25a

SHA1
636c664ee94018f3d76f394bec6ef403882548f6

SHA256
520946a372b4c50accca68009692a7ecd2bf08a7aaa93188dcb2dbecb854bc06

SHA512
095cb44f288e1da68e04521261b99389e70b7ce85f2a44500b0c19bf421998c1b80c621926b3199af8d0e61feb15c592c4f0d5ef6fd77115c2c8877f642cd933

Download Submit
memory/1320-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1320-23-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3088-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3088-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3088-8-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download