bc5745d1c7bb367bd53554eae33ee026f53fbac986092ac13cdc8331cb953da2

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26-01-2024 07:26

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General

Target

2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe
Size

39KB
MD5

559e26c567e6cc2abd232a6ca051ea13
SHA1

c83db4ba87dabeff4bcf7b5dc898c8ff0b2401c6
SHA256

bc5745d1c7bb367bd53554eae33ee026f53fbac986092ac13cdc8331cb953da2
SHA512

bbb25c3e99ca5a5904d70f59fe8b3084a6fdd35e76db3991b8dd42a3d3bacbd1f4cdaca2b1bbf5609d246e0cfdee7deb0d64547bf44cfa30fa2cb7f8ebe1b798
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/Wcz0BVFy:79inqyNR/QtOOtEvwDpjBKcmq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_rule2
behavioral1/memory/1988-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2784-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224c-11.dat	CryptoLocker_set1
behavioral1/memory/1988-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2784-20-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2784	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1988	2024-01-26_559e26c567e6cc2abd232a6ca051ea13_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 1988 wrote to memory of 2784	1988	2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe	28
PID 1988 wrote to memory of 2784	1988	2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe	28
PID 1988 wrote to memory of 2784	1988	2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe	28
PID 1988 wrote to memory of 2784	1988	2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_559e26c567e6cc2abd232a6ca051ea13_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2784

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
39KB

MD5
f42f795e0211f80983633e766c1adc35

SHA1
831ec9ef6b61bddc3a91342ea916a5a20745f840

SHA256
4c50dd86eafc798efbc69fa9f35e6c21f3c0195722e2d88d43bd53927bc5a81f

SHA512
803610c83fd86030818f45232dcb7af83bd8956ccae3607c85282788ded0841a7d91a20e4ef9a50458b1aeb3b234740d172b6ddb277907dce9a100b0a34f74bb

Download Submit
memory/1988-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1988-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1988-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1988-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1988-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2784-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2784-20-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2784-17-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download