7ed59f5ecc1111eb6536d722497901d863b74ce615e8a2cf8cb8b5f3a6de1a44

Analysis

max time kernel
143s
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
29-05-2024 16:24

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General

Target

2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe
Size

63KB
MD5

1965bff05f12ff5665ebb33d1dbe4440
SHA1

430e5e2eda17e27b7886b148ea8adfefe121e57b
SHA256

7ed59f5ecc1111eb6536d722497901d863b74ce615e8a2cf8cb8b5f3a6de1a44
SHA512

8ee490c7d83c67b89479353314a06855c23beae770cbc59bebf50e9253a75e8242588713491b9c827fd7669a99ed30f86de2ab3c648158bb6fb190cf4499a415
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnxQ:btng54SMLr+/AO/kIhfoKMHdai

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023246-12.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	2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_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
1672	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 4296 wrote to memory of 1672	4296	2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe	91
PID 4296 wrote to memory of 1672	4296	2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe	91
PID 4296 wrote to memory of 1672	4296	2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_1965bff05f12ff5665ebb33d1dbe4440_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4296
- 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:1672

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=4080 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
1⤵
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
63KB

MD5
a316543624e40c8c9c41ddc686ab27d6

SHA1
1e4868d48e0d4664da874a329a740dd08d298451

SHA256
0388a2dbf400cd7d9e7c3b2118e92dd63c433cfed6e21513dcedba4b1d9c9ca6

SHA512
dc5d6224039d8265be911b385073f45a37de61b78dda9bdadb664c910383b3e0fb07d56230cfba51e0a33519763fb268ff60248e8d884de1b70d0e909eba94c3

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

Filesize
185B

MD5
3b9b4ce96818da0887f6beee80280612

SHA1
5f109d6673c6b07f1784f45ff3a67d954e762644

SHA256
d7d4b1a894f8995d7efc981da7b77007911b6029b598f19bf5484bc7b45f6d9b

SHA512
5466505e92784fb1a83b0ae27ede9c1da6acea024758b44ab238b61ccde2f5d18d59f62888b4e785a79508ef6617a8dee09b0f73c329585768f8d0770d59ebd1

Download Submit
memory/1672-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4296-0-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4296-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4296-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download