708b685391ce3dae1cc0a0644135d85b694bd94077f803ee6518a8e331a01796

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 14:35

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General

Target

2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe
Size

53KB
MD5

b5a762993658cb569f29e629d44b9c4e
SHA1

f2ff37a29f0ba7c4f10ea3bfd45a30df34604280
SHA256

708b685391ce3dae1cc0a0644135d85b694bd94077f803ee6518a8e331a01796
SHA512

70597870570df93bd805afe067889e25b2a3a33f8a4bb2b90121f49fcb0fd4bbf232b6eb7cdc826fc3f8eb29a3cb97407f1cbe71055f93bf743b2913a6b68c99
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRszDr6PR:79mqyNhQMOtEvwDpjBxe8TpXRSDePR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2848-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000014120-11.dat	CryptoLocker_rule2
behavioral1/memory/2848-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2556-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2848-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000014120-11.dat	CryptoLocker_set1
behavioral1/memory/2848-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2556-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2556	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-06-15_b5a762993658cb569f29e629d44b9c4e_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 2848 wrote to memory of 2556	2848	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	28
PID 2848 wrote to memory of 2556	2848	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	28
PID 2848 wrote to memory of 2556	2848	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	28
PID 2848 wrote to memory of 2556	2848	2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_b5a762993658cb569f29e629d44b9c4e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2556

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
53KB

MD5
a7c5d7b1f219192b96c2cfec8bd3c740

SHA1
59eddde950cf9563a4566c3faf2a7feaab2075ba

SHA256
df3aae39a0f5de1242a2d39aa84c54b2e1aa0f1baa03cbad91283bd91d9a34c6

SHA512
a4ca82c4de5bc8b443a3a41397e61693e8f2927e3ba144bb7d0fb4d2fc67bbca1280eab7cad0afd4635c1aa2f6864767b687f0914e44122013d9cad2b4938537

Download Submit
memory/2556-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2556-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2848-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2848-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2848-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2848-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2848-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download