215e7fd8028f432b2ea21bfeeddcc6cdfa70beb8205d645b8cf6cbff907c9c95

Analysis

max time kernel
149s
max time network
158s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09-03-2024 17:46

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General

Target

2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe
Size

61KB
MD5

f51474659882c7083f40acfefe68cd89
SHA1

cdab12ac6d2b08894abedc03abb428c5ce27db7e
SHA256

215e7fd8028f432b2ea21bfeeddcc6cdfa70beb8205d645b8cf6cbff907c9c95
SHA512

b775ad822ed1b24f7612fcbfc6ec7b544ed69e59a361160dcd7158d707f4706189334f8a20aecf0f20ddfbca413215e8915039030e08054354ced22d4b963c1c
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHs:btng54SMLr+/AO/kIhfoKMHd1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002321f-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2768	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 1120 wrote to memory of 2768	1120	2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe	88
PID 1120 wrote to memory of 2768	1120	2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe	88
PID 1120 wrote to memory of 2768	1120	2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_f51474659882c7083f40acfefe68cd89_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1120
- 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:2768

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
8e553b12d31e6568323d90f55499d2e0

SHA1
cf996b498678ed942e263a73672d7a3ccb671bb9

SHA256
4ea8a7ff91b8d8c8e5e356bf6b08d7b4336ec7d22ac1c0e8ae172c38dddfd3bd

SHA512
1acafb8170ccd3039259dc1cc76ea7154ef87ff61a83b890c079e6e18cc3f4dac131b6fc2630d7d68dd0f4fe85faa833759b1fe79753b93d4fedba1b1b61e04e

Download Submit
memory/1120-0-0x0000000002330000-0x0000000002336000-memory.dmp

Filesize
24KB

Download
memory/1120-1-0x0000000002330000-0x0000000002336000-memory.dmp

Filesize
24KB

Download
memory/1120-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2768-19-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download