fbbb8bac2b65d70414e5b42f8d3533a28fd6ceb715c33c9b4c8d6b2394bb8e2d

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-02-2024 06:44

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General

Target

2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe
Size

50KB
MD5

db27d897ce3fc65407060be310b3df57
SHA1

564f461c3f0c0c8b8633f479ef5eb4b775dfdae8
SHA256

fbbb8bac2b65d70414e5b42f8d3533a28fd6ceb715c33c9b4c8d6b2394bb8e2d
SHA512

b6b5169b5e7f91e40ba75a7668efd633b5fe747c62b1610d7ec507cbc697a585328b78593cc91a78f5f9491711e4e6c2980687c9c4b445ccb5e6432e26b62a9e
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPxyV4tFVgQ4O:bIDOw9a0Dwo3P1ojvUSD4PRtFVgPO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3360	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 1112 wrote to memory of 3360	1112	2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe	91
PID 1112 wrote to memory of 3360	1112	2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe	91
PID 1112 wrote to memory of 3360	1112	2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_db27d897ce3fc65407060be310b3df57_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1112
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:3360

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
50KB

MD5
86acdfaaf7590dd83dfc883934dfdebf

SHA1
c0d900fa8b5d2afa8813a44858c02fef723da389

SHA256
59bf374f3bbd7b51c678d746c399fd97956781258842e2357bf2a594f3d27476

SHA512
463f9e801186a7ac44f4071ea1f2cb1a0dfcff3cc3f36e9baf65f3fb352d697ce4740597ef407c4d14aa2e6eba34da6aad3297f5dd66876797a0d2ebcc9eacc1

Download Submit
memory/1112-0-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1112-1-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1112-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3360-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3360-21-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download