a0ebc208f7966e69e0258da3761cbe0ae7b4d1ed0887e96760d43dc7873978e9

Analysis

max time kernel
146s
max time network
156s
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 04:28

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General

Target

2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe
Size

42KB
MD5

29fef9b50d2eff13d5c55345cd04fe08
SHA1

35182058eb70d97bf440c929cdc7a715872c2541
SHA256

a0ebc208f7966e69e0258da3761cbe0ae7b4d1ed0887e96760d43dc7873978e9
SHA512

ccca76350e0b9ea4150b38ed2c4d4beab1ec33309bb4d321bda839a8240454dbd51506b8338452ba5a09a8e99eb976eac9e71863bd67eb97d9d3468f93c114ec
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZWQpyO:btB9g/WItCSsAGjX7e9N0hunrknlN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db2a-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-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1904519900-954640453-4250331663-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1076	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 4436 wrote to memory of 1076	4436	2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe	94
PID 4436 wrote to memory of 1076	4436	2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe	94
PID 4436 wrote to memory of 1076	4436	2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_29fef9b50d2eff13d5c55345cd04fe08_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4436
- 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:1076

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=4072 --field-trial-handle=2284,i,2771196087253062161,8107167670425198948,262144 --variations-seed-version /prefetch:8
1⤵
PID:2424

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
42KB

MD5
06781109c1533a2def79053d08ecdc92

SHA1
bc8595f8cc31093e4b4096b62ba31129c504faae

SHA256
48482768db027e5253d82860a21d48e077cecbe2d16d9fb7396ab54eadfdad95

SHA512
b9c705da61a907f0e1baca88bb0ac191bc30472d6d6666b75972bd91495b3345e2c644083d69fb70f8ef81b03f7d9f21f4fb68acf366ef4c9a895ed9d0aabb85

Download Submit
memory/4436-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4436-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4436-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download