365711e4e1f11820ed8a6870b7b427a9ac76f4d7564af1a6f445839885dd3695

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 10:25

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General

Target

2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe
Size

40KB
MD5

1e1937411411931249b85543f1accf50
SHA1

37b69398b0183dc70e0519f3c6331ac3096fb75d
SHA256

365711e4e1f11820ed8a6870b7b427a9ac76f4d7564af1a6f445839885dd3695
SHA512

27f38bdf303e5361ab27def6cab5f4445254cc8431fe729a5f3b23abc14988b2422fc62d75fb4ef000a8c3ecbc8fe9bd3c99c923862dfee694fc8919f40ae626
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vlk:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLe

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000224e9-13.dat	CryptoLocker_rule2
behavioral2/memory/4784-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4784-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00090000000224e9-13.dat	CryptoLocker_set1
behavioral2/memory/4784-17-0x0000000000500000-0x000000000050B000-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2628	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 4784 wrote to memory of 2628	4784	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	86
PID 4784 wrote to memory of 2628	4784	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	86
PID 4784 wrote to memory of 2628	4784	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4784
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2628

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
0299faa8b07589e09ed51a6384a6466b

SHA1
62f983b0554a3c767e54833cec4127faeba2cd2c

SHA256
60d6ffb641f94f99a84f05e6dec41b57c1528306da1856360e379c77b3e569bc

SHA512
7d9682b814cb06330e61582a51deed28d74baedf4818236d9aa5c208be31f9fef2ffadb5261b01481216ec21edce4e140dd6ba63f422654d749c28d0c1d02404

Download Submit
memory/2628-19-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2628-25-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4784-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4784-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4784-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4784-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4784-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download