334b745fef48fa6af9f83c9420766f7f46226c45a40fd42a195065433d66c594

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 23:25

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General

Target

2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe
Size

62KB
MD5

2527b863481b5a4d7d2af6613781ba03
SHA1

3583cb56b03be1b3599ffd4540afffc8cf661f09
SHA256

334b745fef48fa6af9f83c9420766f7f46226c45a40fd42a195065433d66c594
SHA512

ddab9925057ee44a1903c61d0a3f48432f0801ea31bd735bc3cf20036c91abe317a51c6f6ee8d15fb872e7c0dd6f7cbebd5eccbcf058bdd3d080f0994ceabf71
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7H6:btng54SMLr+/AO/kIhfoKMHdaw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	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 4776 wrote to memory of 2696	4776	2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe	85
PID 4776 wrote to memory of 2696	4776	2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe	85
PID 4776 wrote to memory of 2696	4776	2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_2527b863481b5a4d7d2af6613781ba03_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4776
- 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:2696

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
63KB

MD5
227186b1239180f884cb93f25949c919

SHA1
0055d343d65c8cfbc5dd6284beb94f09fa627649

SHA256
c2c47b2d1d0d80fd22c71fd789c6c3a936627ecafd192668e06bd91ebfa25c17

SHA512
67feebef9fd9d7900fbf97cbb786b9ed53df9d9ab206d76e4dac770a03606da0792e323eafd4a8fc1cfa36d549d11f78554b2e421ddd656cbe1ce168a364924c

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

Filesize
185B

MD5
9a70b115419bb7c08aa9e21edccfcb6d

SHA1
ae95273e7e74c220cb183cb2ffa1b9016ca75e0a

SHA256
2fac21de79a635d260b8ec9e6dff20830afb915f7a2bd60c5ab8a3d1085f4521

SHA512
584075b6eda5329304cc900a7c53862b97bb19fad40b96f0c16861c3b3513eb189f32cf4e8e756d578f8f2235d02471ad4f5f96e03704b7e6243491a96203f58

Download Submit
memory/2696-25-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download
memory/4776-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/4776-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4776-8-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download