558d57a92646fc28d3b939ad92f4f213f4cc9f2a97e5e97c58b97d1f0f2f59bd

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
21/02/2024, 13:35

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General

Target

2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe
Size

60KB
MD5

3d2d6c9fd3c9237428d4a0e1a1b302bb
SHA1

129bdb815bded26ebcb19be4bce380c7b8155fbc
SHA256

558d57a92646fc28d3b939ad92f4f213f4cc9f2a97e5e97c58b97d1f0f2f59bd
SHA512

2d851e92cfacf336ef372308c99e026ab3950c6b7585da453819fe80421406edafab54fd312d16dc5aefd488f576d28d21298552a38c80202d52cdae20819fe4
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH6:btng54SMLr+/AO/kIhfoKMHdn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023219-12.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-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1414748551-1520717498-2956787782-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	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 3076 wrote to memory of 1004	3076	2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe	80
PID 3076 wrote to memory of 1004	3076	2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe	80
PID 3076 wrote to memory of 1004	3076	2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_3d2d6c9fd3c9237428d4a0e1a1b302bb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3076
- 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:1004

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
61KB

MD5
11ab7e4c8757b6d8b01f215f7089fe1b

SHA1
ca948aa9f28113bf96b03ddc0a469f2fef52c38f

SHA256
9d81d7bf964420fec60ceba004a963c0c6b39caa53e0fb5a920bdb4680182768

SHA512
63b8583a00cad9ec0e575e2e4fdf456c44d1602e7cb10207ef4be59fb89b412bc145c445aee068cf809365e73d76633d68834d14aa1080e49a70783d60bea908

Download Submit
memory/1004-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3076-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3076-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3076-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download