88b797df1e8f54474ae2b90552ed0cdf06331f8e1586713ed738677466f7d4b4

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:24

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General

Target

2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe
Size

47KB
MD5

1d7631a729511730d42c5d31b6d05076
SHA1

2d4426fc3d0a2a6db482062af30259463910397c
SHA256

88b797df1e8f54474ae2b90552ed0cdf06331f8e1586713ed738677466f7d4b4
SHA512

8296a592bc4d467f9b920614210ec7fe9f0f3c69bd2e0ba74c07e9d8e0053fefcdf82aa14c5739669f375ff39053b8859dee0282601eddd50bac3cde033bf97c
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/DpkcI:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1740-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1740-13-0x0000000000680000-0x000000000068B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2024-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1740-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2024-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1740-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1740-13-0x0000000000680000-0x000000000068B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2024-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1740-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2024-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2024 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe

pid process

1740 2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2024	asih.exe

pid	process
1740	2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe

description	pid	process	target process
PID 1740 wrote to memory of 2024	1740	2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe	asih.exe
PID 1740 wrote to memory of 2024	1740	2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe	asih.exe
PID 1740 wrote to memory of 2024	1740	2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe	asih.exe
PID 1740 wrote to memory of 2024	1740	2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_1d7631a729511730d42c5d31b6d05076_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2024

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
47KB

MD5
1df1b9acc08a1b0c287970cf86016bf0

SHA1
94f646ea7b1ccacf1c8231792097cba5aed26267

SHA256
b44b39f2dd5aa2f15cb59b39d4e7a911b9e891d85777c465bd1d2593b2109e20

SHA512
789d5e7f91062f7a6316a821e802744054e5b28de1110fb187ee1e85d6f301a14c38a1ff43c7c61699cff3a72fb372888e24c5bf0dd952ecc0af65bf2a44589e

Download Submit
memory/1740-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1740-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1740-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1740-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/1740-13-0x0000000000680000-0x000000000068B000-memory.dmp

Filesize
44KB

Download
memory/1740-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2024-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2024-19-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2024-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2024-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download