798618163402e053d2734081379340625755ad6ae6082b0306c0880d72752ae4

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 15:41

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General

Target

2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe
Size

63KB
MD5

d594e090cc721259ac937efcff359d8a
SHA1

f97cdb644e5e55bea279f01da07a5c2c464a1ce5
SHA256

798618163402e053d2734081379340625755ad6ae6082b0306c0880d72752ae4
SHA512

c800ad5df895d7375b17c16757ade6873c1ad3837a7ca8cea020c804c0ec0b8467527f91ad5d800aba1076272290ff3001c03f3a033fd474322575d652557b8a
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxY:btng54SMLr+/AO/kIhfoKMHdPY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b3d-12.dat	CryptoLocker_rule2

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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2484	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 3520 wrote to memory of 2484	3520	2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe	84
PID 3520 wrote to memory of 2484	3520	2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe	84
PID 3520 wrote to memory of 2484	3520	2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_d594e090cc721259ac937efcff359d8a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3520
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:2484

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
63KB

MD5
830e9bd1b5c1445bd9af166b443fd795

SHA1
675644d964e830dbe292fa5094d40ee37ccbbc8c

SHA256
e0093d0a9e8755646026edf5d25f61193594a7e9c40703250d2fbbac79a656aa

SHA512
f092951aee0d4681ed1d9fb55a64c6f8dc3a51625b06399f068d6d971aacf71cdfad513f6ac200782ae1788addc0b8eec6fbe1ebf09f65d6b6f63ac0f5734228

Download Submit
memory/2484-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3520-0-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3520-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3520-8-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download