365711e4e1f11820ed8a6870b7b427a9ac76f4d7564af1a6f445839885dd3695

Analysis

max time kernel
152s
max time network
158s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 15:37

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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 4 IoCs

resource	yara_rule
behavioral1/memory/1736-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000122c2-11.dat	CryptoLocker_rule2
behavioral1/memory/1836-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1736-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1736-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d0000000122c2-11.dat	CryptoLocker_set1
behavioral1/memory/1836-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1736-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1836	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1836	1736	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	28
PID 1736 wrote to memory of 1836	1736	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	28
PID 1736 wrote to memory of 1836	1736	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	28
PID 1736 wrote to memory of 1836	1736	2024-04-08_1e1937411411931249b85543f1accf50_cryptolocker.exe	28

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
40KB

MD5
0299faa8b07589e09ed51a6384a6466b

SHA1
62f983b0554a3c767e54833cec4127faeba2cd2c

SHA256
60d6ffb641f94f99a84f05e6dec41b57c1528306da1856360e379c77b3e569bc

SHA512
7d9682b814cb06330e61582a51deed28d74baedf4818236d9aa5c208be31f9fef2ffadb5261b01481216ec21edce4e140dd6ba63f422654d749c28d0c1d02404

Download Submit
memory/1736-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1736-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1736-3-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1736-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1736-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1836-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1836-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1836-25-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download