daef3597e1bee5342c560c3d521a44c3d76bab916ec1767275cc1953efda0870

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
07/06/2024, 00:36

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General

Target

2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe
Size

71KB
MD5

b32a6a925b103dc4a0fb118395345d75
SHA1

95d4b1a6c575f537ae9cfd6550b75b60372455b4
SHA256

daef3597e1bee5342c560c3d521a44c3d76bab916ec1767275cc1953efda0870
SHA512

ef1ff0f82312d9d7fc63e22c2e2b367a2bf290adeb3a464792d06110d8fbed2c873af004651e4715949d65dc05744ddece1592feb76586a314f36e50e6c91664
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZO4:DW60sllyWOtEvwDpjwF85P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1576-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023409-13.dat	CryptoLocker_rule2
behavioral2/memory/1576-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5064-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1576-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023409-13.dat	CryptoLocker_set1
behavioral2/memory/1576-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5064-17-0x0000000000500000-0x000000000050B000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5064	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 1576 wrote to memory of 5064	1576	2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe	82
PID 1576 wrote to memory of 5064	1576	2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe	82
PID 1576 wrote to memory of 5064	1576	2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_b32a6a925b103dc4a0fb118395345d75_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5064

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
71KB

MD5
c26a05c5b97b09511e3a694ba4685e3f

SHA1
d04f19f53e20ecbe703f0716111d643dc9551b02

SHA256
e5d25a7c97f28ec3f28374040e28507161214dddf114d64a5b9adfea7e7b66cb

SHA512
34efa8177ac58280d9ca90472d8afc37a9fa77b029b4d205ae381c8bf151d6045459473c46a4968dacdbe4ec5345c81727245ef99a54c136fbed98a29fa5f771

Download Submit
memory/1576-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1576-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1576-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/1576-9-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1576-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5064-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5064-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download