1fb8f384acd6b115069de35936ed4bf7f49f278a28e33692a429f0fe8bd88d60

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
12-02-2024 17:54

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General

Target

2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe
Size

38KB
MD5

e4c6a8f52933f59cf9ebaa0d02b08605
SHA1

82686aec00ab89206d9fcbf0d075bf962d82bf31
SHA256

1fb8f384acd6b115069de35936ed4bf7f49f278a28e33692a429f0fe8bd88d60
SHA512

5885cc8d1666217a1e4e16e7474dff565c0fb1583a0661396041afc561a4b6305b0be6560ec76f663f39b3b4b229f9c39d601e52f49f88c763295c8dd1658eba
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfu:X6QFElP6n+gJQMOtEvwDpjBsYK6u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1640 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe

pid process

2256 2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1640	asih.exe

pid	process
2256	2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe

description	pid	process	target process
PID 2256 wrote to memory of 1640	2256	2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe	asih.exe
PID 2256 wrote to memory of 1640	2256	2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe	asih.exe
PID 2256 wrote to memory of 1640	2256	2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe	asih.exe
PID 2256 wrote to memory of 1640	2256	2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e4c6a8f52933f59cf9ebaa0d02b08605_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2256

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1640

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
38KB

MD5
c4135408616ee1cc3489b8a4c7fa7430

SHA1
1aedb704a79533f2aa30dea225f840343ad73985

SHA256
b7fa2af11cdb384de80294c68d9042f0b5321a8f619ccb2c4ebc61180cedf2b7

SHA512
b30a5153b8955ef03153f538d5d66b14d05faefb029aeeba373f15e529024ebe871608ee1531697b4947589a5b6a7515e46a0a6ee338c0181c8db84ea3ab57c3

Download Submit
memory/1640-16-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1640-15-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2256-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2256-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2256-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download