05fa2ec1e6a375fa09eda8ec8d8d48e3f9a968a858837513e61df7a75b20ca25

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 04:37

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General

Target

2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe
Size

40KB
MD5

c1d7dac3a7f212dbc4483a91e15d7587
SHA1

ad7a2057e8bb93fdadcdf5cda5222c6a4ddd6735
SHA256

05fa2ec1e6a375fa09eda8ec8d8d48e3f9a968a858837513e61df7a75b20ca25
SHA512

e2ab3edb893f0e115c2a921a09e39a4653cf063d3613af7e16c891017b0c201c19e423e8d0897833653936e6f289c1680032a3615b5d44b1ab7db784b729da1f
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8PEk:bIDOw9a0Dwo3P1ojvUSDhck

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023145-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3916	lossy.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 2464 wrote to memory of 3916	2464	2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe	87
PID 2464 wrote to memory of 3916	2464	2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe	87
PID 2464 wrote to memory of 3916	2464	2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_c1d7dac3a7f212dbc4483a91e15d7587_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3916

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\lossy.exe

Filesize
40KB

MD5
76c08a319a202cb5479752de828846fd

SHA1
ad3c1cf6c55bbbc982a0d9ce92cb47b434e1827b

SHA256
846d5c72b3fb9a47cf76aa9e6626f792c9a9129d01f67a1552a957dde20dfa93

SHA512
d8b1d230b8836842eecc2505f80d3234be14c6b57dc5b9e232bf93ad80dc1126383831e96e5f69b3443b1325f547e48aa6adf294eedd7728ea5a646c8b6048cd

Download Submit
memory/2464-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2464-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2464-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3916-17-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/3916-21-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download