89e7007302aad9454b4f245d3918633e4b238f38ca93f0e9f66fb06b063b59dc

Analysis

max time kernel
140s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 01:30

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General

Target

2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe
Size

73KB
MD5

25a690635bcf18bcc58951bd25c2af55
SHA1

ffa57d09dab7a6b7ac23dc596aa01d1e12d1f664
SHA256

89e7007302aad9454b4f245d3918633e4b238f38ca93f0e9f66fb06b063b59dc
SHA512

999edbab7de7d5bf7e7413f7d64fba1af081f988f7ff0edbd093b9302be4e8cc976fc0cfa0769e090225a3ba024dfa278ca48b13c9a0f01779b7dd11437ae57b
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4U9HueDgaRWDtJgXkeUT9:vj+jsMQMOtEvwDpj5H8u8rLXkem9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022480-12.dat	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4540	misid.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 4796 wrote to memory of 4540	4796	2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe	89
PID 4796 wrote to memory of 4540	4796	2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe	89
PID 4796 wrote to memory of 4540	4796	2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_25a690635bcf18bcc58951bd25c2af55_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4540

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\misid.exe

Filesize
73KB

MD5
504b98460a0e287d05fbab8aa52455fc

SHA1
a8a034cf34fee052602c5a009e97e1a978c06c63

SHA256
a2ae3a304666c74b65d87f21146552c677d9f1f3e50cd10827bb6077e15e41cf

SHA512
5962abfc4f85d72f685cdfa326dc0093355b06604c6726a9143ce1ecae4e22e10e809c022a1811b2b875a581b9df06d110fa23dd9e44c1b1f50582ca2cbc80f3

Download Submit
memory/4540-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4540-23-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4796-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4796-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4796-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download