f778cfc087be7738473b2cd5a8cbd7b893e6a72a5efdb343100459c7aec3585e

Analysis

max time kernel
129s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 21:04

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General

Target

2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe
Size

62KB
MD5

2ea60b931b92206d6c976882b0f06dad
SHA1

a182a8104b8420f5f8c491b46e401b915c3873c5
SHA256

f778cfc087be7738473b2cd5a8cbd7b893e6a72a5efdb343100459c7aec3585e
SHA512

c8d3b6fe0fa8b168132e14c7d2d53bde8aec49f341d514397ece4d8fee2ae01719a3d13e9f084ca3d279e81b9e77e32f6861dddd0a36a5a762b870d03e50d261
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnx:btng54SMLr+/AO/kIhfoKMHdax

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023444-12.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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	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 3220 wrote to memory of 2924	3220	2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe	87
PID 3220 wrote to memory of 2924	3220	2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe	87
PID 3220 wrote to memory of 2924	3220	2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_2ea60b931b92206d6c976882b0f06dad_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3220
- 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:2924

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
62KB

MD5
f8068a634c5c6d31444bfd1ced16b0e9

SHA1
791688c1e3a96ab9b93309bc8525332167fae5c4

SHA256
81748fec97247feb4bd7740be5ed425858d9fa7ecd9b456459aae1e0e8f4c73a

SHA512
e1723d236ed4ddb687288f0b6518dea1234299bc65c02cc24425c01a8f1ab9b1366505592fc60dc9ea190d13c421aab33793befdbaac147d84dbaec37f6d2c62

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

Filesize
185B

MD5
0f08f6ee16a19745d13137fe54351921

SHA1
09a45adc5b37628fb5d5e9d14905ec6dfb2cb153

SHA256
082c2518f7f32421e83741c94d90bd742bcb2306f3331cd3074c59b5cf226cc6

SHA512
f21d296a7517e7c94486c42bdeae99e28b0e660f5bf30ca053f9ad00500120dfae53c3fb9d343e75f63073182b3338a4c9ff6df2e2ce1a41b6c6e7815f95f9c0

Download Submit
memory/2924-25-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3220-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3220-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3220-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download