ea5300428a1a72559aadb9977cea3894a7180242206eb46a7648a5c4994c4f54

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25/01/2024, 19:26

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General

Target

2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe
Size

69KB
MD5

3ec6957c797d78d272bf4211b5892f07
SHA1

1ba0146006f615aac31a814b21063b26c38f1a3d
SHA256

ea5300428a1a72559aadb9977cea3894a7180242206eb46a7648a5c4994c4f54
SHA512

df1acb554b10b185186b531cca5faa199efdfc04590fc5d69e3a1ba368ae9a8e0a1bcda374a2a4f158e58a383380df466ef231e881ad793f05722c8d0180d549
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUtbU/:DW60sllyWOtEvwDpjwF85s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/5040-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023228-13.dat	CryptoLocker_rule2
behavioral2/memory/5040-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4464-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/5040-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023228-13.dat	CryptoLocker_set1
behavioral2/memory/5040-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4464-18-0x0000000000500000-0x000000000050B000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4464	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 5040 wrote to memory of 4464	5040	2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe	89
PID 5040 wrote to memory of 4464	5040	2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe	89
PID 5040 wrote to memory of 4464	5040	2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_3ec6957c797d78d272bf4211b5892f07_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4464

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
69KB

MD5
e299e446393d072180bbab8fc61293ee

SHA1
bbb7a481c54e6677856b49b5b218af871dbc9052

SHA256
de052f5f5434a4a416f6f04cd11e478adcf2c3a0857d759eeca6432a85d29d2d

SHA512
7fde1df405b15c2e4c010c20fe90fd4ecae68e668e43f27c1d16be71ed2fb31321ef80cb3ac6e816fb72c0228450757290dbb56e26c810777f5e3f9648290efc

Download Submit
memory/4464-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5040-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5040-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5040-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/5040-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/5040-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download