4f8f66417a9d362058dee942ebb57f516e3ccfc82f2246582718b363a83258d0

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 03:30

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General

Target

2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe
Size

47KB
MD5

207ec14c24e0aefe5938d197f4ec566b
SHA1

1de2f3a0d6c3954febc3f809a0e9be13a1c6e1a1
SHA256

4f8f66417a9d362058dee942ebb57f516e3ccfc82f2246582718b363a83258d0
SHA512

c33878e4fc10b9a44fc7eee98812a5b60482400e33b1c1e55d42765fef06a0a8e6c70c334d54dc789942cc3ed3d518613576190652c17fbc5e98ff931252450b
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4UKn7yXYJme:bIDOw9a0DwitDT8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000200000001f656-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4268	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 1436 wrote to memory of 4268	1436	2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe	89
PID 1436 wrote to memory of 4268	1436	2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe	89
PID 1436 wrote to memory of 4268	1436	2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_207ec14c24e0aefe5938d197f4ec566b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4268

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
48KB

MD5
b01ce1ac369cd160664bbd3f02a73cdd

SHA1
0f8455c886739de9519c4308a9bcc3927df206b8

SHA256
9313862295594c08586c46e9a58142793363d21fda55a77f010ba368147790be

SHA512
ff8058e330bb734d9acb65de36c377e2af39f51ba974a3675f5dd6e1923f54fdfa952d3f1f693b10c40cd4bae33c7f09248eccea624d6bac0d2e75356b6e9abe

Download Submit
memory/1436-0-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1436-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1436-2-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/4268-17-0x0000000001F60000-0x0000000001F66000-memory.dmp

Filesize
24KB

Download
memory/4268-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download