1345499f6bf11bddb43c22bc763fe87182ed87270ef85b7d353c8c08756313b2

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 05:24

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General

Target

2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe
Size

54KB
MD5

fcb1e2b12daeb61c39f3c805519af787
SHA1

4e2038c4adf90473938d8a9425c831b632ef10f7
SHA256

1345499f6bf11bddb43c22bc763fe87182ed87270ef85b7d353c8c08756313b2
SHA512

e8e7a2d972ce852d9336bd3c3cb17d0ae5b1dafe50913a0283289024a26cbabb4e526647ea24785d4d5e8bec0fe24fd5e7f37b1e6f28311100c1dea4d67b3189
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0V1:X6a+BOtEvwDpjBOi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023155-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0010000000023155-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	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 3924 wrote to memory of 4180	3924	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	85
PID 3924 wrote to memory of 4180	3924	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	85
PID 3924 wrote to memory of 4180	3924	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3924
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4180

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
55KB

MD5
66ea9d280b0956f5d02485549ccdb0da

SHA1
9696f2b2cd18ec858c87a38f117e9868f1af4883

SHA256
8cd44df9d345a9309ba0b37c3000e9bc4d5084a0de1f60907e40d16a50d8b5e7

SHA512
a48c1c0584ce82ea8505b9f5881da62bedb64078ded9a4d06d883d0d1ca130c4baacd249278a635e73ffaaa44fdacc716d81d2a9dae721719f415d9c8dfff257

Download Submit
memory/3924-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3924-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3924-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4180-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4180-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download