848a165009c61782eb585da663a19e42517f35d70397b90625fc6cde3b42d8d8

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2024 14:30

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General

Target

2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe
Size

60KB
MD5

4a0d1202ef036b6a3c059f3ae779ae94
SHA1

4b83079fef2dcd992c758e61bb08735d65859fd4
SHA256

848a165009c61782eb585da663a19e42517f35d70397b90625fc6cde3b42d8d8
SHA512

b822eecd4e182c8f913dcd50d77992d6a0cc57f94e0293a597dd10886158fbf52957e1460153ee6ba2bfdbf89dbed6f772fb2b8e9441107ecbe5cff462d0b937
SSDEEP

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

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023217-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4508	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 1816 wrote to memory of 4508	1816	2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe	83
PID 1816 wrote to memory of 4508	1816	2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe	83
PID 1816 wrote to memory of 4508	1816	2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_4a0d1202ef036b6a3c059f3ae779ae94_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1816
- 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:4508

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
60KB

MD5
60000487f09b9c616a18c4d1e91ddc20

SHA1
3ccc7905a692471ddcd6120255180097a17743b9

SHA256
3d68d7e3e45be3d150fdf27840a95836121bdd0ee889bb2680f3ea512a75329a

SHA512
2be42b1ca84519f76e1e17501bc5638c4cffb33db66fa84ec3fc189e930b6c7178b6007053faff916e8ba20e29d3a74719896bceefa798bf237e73fafbe58561

Download Submit
memory/1816-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1816-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/1816-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4508-21-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download