32b74167e18861bb27aa32f8d004340e14ab53ea1f00eb8a64378494716d7627

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/05/2024, 05:00

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General

Target

2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe
Size

38KB
MD5

d2185f65247467bf809e904b3a801a8b
SHA1

5725fa07d67ef96cc72c3cf4baaa7ff7a6e373d7
SHA256

32b74167e18861bb27aa32f8d004340e14ab53ea1f00eb8a64378494716d7627
SHA512

5f2db5e161d7361c7bfd2d078c44010cb0194ed36b7992d9c31883d07c6299290ffcad4d20aba0e9b9ba15874fd0c02b340b48ee4fd5fcd4ac2865932752ab6e
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyHmYvV8o:btB9g/WItCSsAGjX7e9N0hunRvGIV8o

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000002324f-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	2024-05-04_d2185f65247467bf809e904b3a801a8b_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
3996	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 4664 wrote to memory of 3996	4664	2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe	91
PID 4664 wrote to memory of 3996	4664	2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe	91
PID 4664 wrote to memory of 3996	4664	2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_d2185f65247467bf809e904b3a801a8b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- 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:3996

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=3948 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:8
1⤵
PID:4880

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
38KB

MD5
4814d0381faea1289673aa1fe932baf4

SHA1
ce0b491671a31e08c60abef0d7a5b634178380ac

SHA256
66ed7f4da9f8f4a1ec22152564a8b36e89272382b07c4b6a43318ad2208cf793

SHA512
90a21f2e8cd97743322c38da9bd94d3ed6f20841060e8d03319b8a04f00fdc981798c25dda6cabc109b5ad15a78017ccdb76522380750aea2ec658615c127354

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
58133e62cca1d5c521866ec0e27f0bb4

SHA1
2e74140755a248e1a3af3aac0dfba933601b0c4d

SHA256
282d6468ab9e9be40cf0276d2569ecacfdd43379165023807afa7643af81435e

SHA512
e280ac4c654cc16a41668e3a3c4dc093c8f8521392beeda5418b1954e30e5d29d86bfc922dc7d09b3ba9b3bf5bafea9c4facb3ab20ea17e48de8b4d09ba8950d

Download Submit
memory/3996-20-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/4664-0-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/4664-1-0x0000000000720000-0x0000000000726000-memory.dmp

Filesize
24KB

Download
memory/4664-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download