5eb32db2fa35bf154302cc8e301419926cefdd342927b3b87dd16c65b491108b

Analysis

max time kernel
152s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 01:43

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General

Target

2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe
Size

82KB
MD5

8c3fbd0479ec0a911f947233065339c2
SHA1

2399f4ad6bb0129909821e4243a0b86f174d16c4
SHA256

5eb32db2fa35bf154302cc8e301419926cefdd342927b3b87dd16c65b491108b
SHA512

02eb8e0099ed6b401d94035394253a01e760ea17b598fff061fed6b906524105aca15a01ed79f32b88c7c01e25f072fefa770d74670921a647eef87f3c961354
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLa5VccPtNw5CS95yFPnm:V6QFElP6n+gMQMOtEvwDpjyaLccVNlM

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4172	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 5108 wrote to memory of 4172	5108	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	84
PID 5108 wrote to memory of 4172	5108	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	84
PID 5108 wrote to memory of 4172	5108	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4172

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
83KB

MD5
a81a0a787adff4d732062c95f0fd46bf

SHA1
93e259dac3c4201def834d17c96db176cd60757b

SHA256
175e7093d4cfb77e2228b28b3f04124affe09e57143e531897f0c7f31dd0b9de

SHA512
49c89f981abc9ffd4e1168ede4d797e52c7a9e2d19c57f019397dcbcc05bb4991cf76c9c91321b2b32b2373d3c35b0b1dea542c700c40db925562a473dbd86c4

Download Submit
memory/4172-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/5108-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5108-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/5108-2-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download