5eb32db2fa35bf154302cc8e301419926cefdd342927b3b87dd16c65b491108b

Analysis

max time kernel
150s
max time network
141s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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
behavioral1/files/0x0009000000012248-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012248-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1936	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2100	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 1936	2100	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	28
PID 2100 wrote to memory of 1936	2100	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	28
PID 2100 wrote to memory of 1936	2100	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	28
PID 2100 wrote to memory of 1936	2100	2024-02-20_8c3fbd0479ec0a911f947233065339c2_cryptolocker.exe	28

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
83KB

MD5
a81a0a787adff4d732062c95f0fd46bf

SHA1
93e259dac3c4201def834d17c96db176cd60757b

SHA256
175e7093d4cfb77e2228b28b3f04124affe09e57143e531897f0c7f31dd0b9de

SHA512
49c89f981abc9ffd4e1168ede4d797e52c7a9e2d19c57f019397dcbcc05bb4991cf76c9c91321b2b32b2373d3c35b0b1dea542c700c40db925562a473dbd86c4

Download Submit
memory/1936-15-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1936-17-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2100-0-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2100-1-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2100-8-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download