156eb933b0bfd53b673234b9ef1a5414422301922d82d35b748bae7a05e63834

Analysis

max time kernel
147s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 02:41

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General

Target

2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe
Size

47KB
MD5

59d64db286da40c1ce13f203f5b1aa65
SHA1

f1428bb7c2f247357debb5a4c2929f673103ee39
SHA256

156eb933b0bfd53b673234b9ef1a5414422301922d82d35b748bae7a05e63834
SHA512

ae8ba2dc0a125183571a3a6c170160e503b6d970f67c40d122af89c721f54dee1e4740013f1caf14faffd1433c4fefe5dc1a84929ed6110036f96b1a397d7624
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkcq:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/428-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002343a-13.dat	CryptoLocker_rule2
behavioral2/memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/428-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4688-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/428-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002343a-13.dat	CryptoLocker_set1
behavioral2/memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/428-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4688-27-0x0000000000500000-0x000000000050B000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	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 428 wrote to memory of 4688	428	2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe	84
PID 428 wrote to memory of 4688	428	2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe	84
PID 428 wrote to memory of 4688	428	2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_59d64db286da40c1ce13f203f5b1aa65_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4688

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
47KB

MD5
caa0baddae810ea84dc6a68e11910231

SHA1
1c3c19a4b7140e227ded6b609462aada57ebdac1

SHA256
34f29e5aa9d3cdebf952d883f9b2ec483f535f15f93103b51e558e368bec47f4

SHA512
62edf046ec65928105293f64d89397947d4ac5ff7a0f4ed90d1e55febface32c6769e6b6716b7e3ffbbf6db6e15544fb462008fdfa6c7f513565b7dd8fab844c

Download Submit
memory/428-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/428-1-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/428-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/428-9-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/428-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4688-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4688-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4688-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4688-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download