3b86900b121bc20e44e5c365c9e716b56efe99992cdfd90923dda4756f905bb3

Analysis

max time kernel
138s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 00:41

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General

Target

2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe
Size

43KB
MD5

7a228ca99ecf14373bf202fa3a20757f
SHA1

cc8989ce7d1d8d3e931a71cf7e12f048a3e44a13
SHA256

3b86900b121bc20e44e5c365c9e716b56efe99992cdfd90923dda4756f905bb3
SHA512

a77ba3af401c37d0b218ae2d10bb0390e825f94a032e4a88e9c3347e909827ba9396a30a84c147273d9a13017334ae9242bedf199c390bd09dcf5377f795e20d
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96egQO:btB9g/xtCSKfxLIcMzUw96J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023108-12.dat	CryptoLocker_rule2

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	2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
552	gewos.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 4480 wrote to memory of 552	4480	2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe	84
PID 4480 wrote to memory of 552	4480	2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe	84
PID 4480 wrote to memory of 552	4480	2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_7a228ca99ecf14373bf202fa3a20757f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:552

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\gewos.exe

Filesize
43KB

MD5
3cdd30a047a17b01e890956be3148183

SHA1
3e815ea34abcb1be0ebe35a64e49175c6472829b

SHA256
0c17e3a97695e7b50384e0dce3e515d6c7cf00c76a3412deac4156a186563e57

SHA512
b7da0e0048d43b8559704fe3d28963a467fd0880cb9d7e4687ddf92a77b8f797fb022a7a87644d4df6df32bf25decbae7a11dba86f9189961feb35ade795ef1b

Download Submit
memory/552-20-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4480-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4480-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4480-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download