01c13bedb382339529f475d4ec5f2b38293d43c273d57a5f14587414c9583063

Analysis

max time kernel
150s
max time network
154s
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 10:02

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General

Target

2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe
Size

54KB
MD5

c18996d56c54b7785191e10dc6e18d99
SHA1

d76f5aaa5d3ea9c5f7a8c5adee4ad9ff83b84b7c
SHA256

01c13bedb382339529f475d4ec5f2b38293d43c273d57a5f14587414c9583063
SHA512

8e0f038709b674f5cd560674c20a09e2b4b7bf41433b1e2f100996ee9d3857b485c15e471e285742b40a04da9f6fc272760972fc4ac22d60c1fc4a0e7eec8a37
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0wy:X6a+BOtEvwDpjBOG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023204-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023204-12.dat	CryptoLocker_set1

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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4524	asih.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 4564 wrote to memory of 4524	4564	2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe	84
PID 4564 wrote to memory of 4524	4564	2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe	84
PID 4564 wrote to memory of 4524	4564	2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_c18996d56c54b7785191e10dc6e18d99_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4564
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4524

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\asih.exe

Filesize
54KB

MD5
45e6d360468ec2f88804f9047fad28c7

SHA1
8c7910c92748b745b1a9466080de86b7af7e6df1

SHA256
30f2d3b5a2cb213bcbaf26a4dac24b7bf6a5c663c640d747728abb6d2b56871b

SHA512
ca533accbd9331d42d6b4a73c519b62d4b447e7dbd351db0e78cf6372923e1bbfc5a7aaf10974dfbc35a2d47c1a92a1d4513433c69eb85e5297b193057459843

Download Submit
memory/4524-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/4524-19-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4564-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4564-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4564-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download