ac987cd1afffbd4f6571db3acdf3ab59f1210435b6e097d0b8750d96115b172e

Analysis

max time kernel
136s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/04/2024, 03:54

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General

Target

2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe
Size

45KB
MD5

d9ccf735a696896f0dc66ab57a607344
SHA1

9c7dc51bc4dac88772c019f2ea228b6403cc5e46
SHA256

ac987cd1afffbd4f6571db3acdf3ab59f1210435b6e097d0b8750d96115b172e
SHA512

75826679909a30a5b6d3e775e3ebcf573eac4dc791672f8eeb5fc6d964b77e76b7697bdf82d450abc5bf558e37419c49f1532418487a951d97cd5173d1c845e9
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkK:P6Q0ElP6G+gJQMOtEvwDpjB8WMlN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2956-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012226-11.dat	CryptoLocker_rule2
behavioral1/memory/2956-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2956-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012226-11.dat	CryptoLocker_set1
behavioral1/memory/2956-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-26-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2872	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2956	2024-04-11_d9ccf735a696896f0dc66ab57a607344_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 2956 wrote to memory of 2872	2956	2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe	28
PID 2956 wrote to memory of 2872	2956	2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe	28
PID 2956 wrote to memory of 2872	2956	2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe	28
PID 2956 wrote to memory of 2872	2956	2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_d9ccf735a696896f0dc66ab57a607344_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2956
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2872

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
45KB

MD5
41b37d43602ccc62249569aaabb6bcab

SHA1
fc1aebc93e52a64539158fe5c62de5cb6433eaf5

SHA256
32cb512d928dce7c21a90d16de1190cbe12646c73734e4654fc824e8c90ff17a

SHA512
d74965773dae8ca5f6d1270802a2d5657c924d0ae3e51fca7702f9f636f96567d8f677dd6f74e08e3b20a1c927b65ebb0fb8533739d5efd78ab2489af328dc82

Download Submit
memory/2872-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2872-18-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2872-19-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/2872-26-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2956-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2956-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2956-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2956-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2956-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download