413609e523abb8729871eb921e72f83fbd43b75e9ef32e0342551831fd248683

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 01:41

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General

Target

2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe
Size

61KB
MD5

cbe3e4de7fb3edb0316d55dd78fc4387
SHA1

d197777702cec15b0efb78541e214d36004e9c96
SHA256

413609e523abb8729871eb921e72f83fbd43b75e9ef32e0342551831fd248683
SHA512

388841ced455ce4b40c82bec2980b03015869e7c2a2d94f736c863bb5b5f66b116e9ae8b4e3eeff33be28c22f3b5cfacb86fcc775e54c60de1b16d0847968476
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHJ:btng54SMLr+/AO/kIhfoKMHdY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324f-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	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 3428 wrote to memory of 4744	3428	2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe	99
PID 3428 wrote to memory of 4744	3428	2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe	99
PID 3428 wrote to memory of 4744	3428	2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_cbe3e4de7fb3edb0316d55dd78fc4387_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3428
- 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:4744

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4160 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
1⤵
PID:1660

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
61KB

MD5
e5a6c0fd988066ff41150dbaa24d7887

SHA1
11f32432cb04b55c8b3696b77ecdf5994b8a0e6b

SHA256
ade769e019c17f2937f6c58754b3ea6f199ca93e20bfdc885e8fa561bdfcf5dd

SHA512
7496a495a324e493247178b71e06a3f9882abac52b341b6e110cc53435caa5cb8a9446ba935f49bccde4a344da744b6c72cf118d2567b5216dc36d5801d6bd61

Download Submit
memory/3428-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3428-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3428-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4744-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download