7961a2d840b58a86885b5e4bdee4ebd32a1e23ec3abbd0581657ae758a1fdf8c

Analysis

max time kernel
92s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 12:43

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General

Target

2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe
Size

57KB
MD5

6ebc782edbe33695f906dea28d0f0ad4
SHA1

3b60274fe0c86c1e36eebcfbffcb2cd03c393d6b
SHA256

7961a2d840b58a86885b5e4bdee4ebd32a1e23ec3abbd0581657ae758a1fdf8c
SHA512

2f95e966b520bc8c29ece739863fb0c64194e21b6245c68c45a669a5a8271db3555d1715b8389274b2d299cb835459c94d95916ac08e620a285b3ce1daa6f961
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH/:btng54SMLr+/AO/kIhfoKMHda

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001fc40-12.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-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3316742141-2240921845-2885234760-1000\Control Panel\International\Geo\Nation	2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5012	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 32 wrote to memory of 5012	32	2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe	87
PID 32 wrote to memory of 5012	32	2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe	87
PID 32 wrote to memory of 5012	32	2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_6ebc782edbe33695f906dea28d0f0ad4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:32
- 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:5012

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
57KB

MD5
c2827462cb8d3526e4c85a33dae1e836

SHA1
8671890332b0eb935ab06f4bfb749bd985736c5f

SHA256
87ea6bf9c1d76851b9f27d88836f7ab615c6a3a78c24e47074851bd639f76a11

SHA512
b14c653e15e38c867bd6ff9a16b90f4f2f36436895d7fd62f5e4b88496259d28efc1eb36ca4f43f8bd8aac7b84de199fecbff1ea6b9d9073babaac448c8cdf7a

Download Submit
memory/32-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/32-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/32-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5012-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download