db5dac3193c73835fd7bf0d4ad2d921a7eddd3d2bfb3dd61a435b9903fee08c0

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 19:40

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General

Target

2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe
Size

46KB
MD5

d491d527c7789f691ebc0052e161a940
SHA1

4827caa359d452392d12230377ff93bbacbf8122
SHA256

db5dac3193c73835fd7bf0d4ad2d921a7eddd3d2bfb3dd61a435b9903fee08c0
SHA512

7745b59ef40695ce17c041501e2ab2755083bfca1e2408bba716afa51f1afdb4c5e4fd455d96276b2402c649fc32e77c7078c25a004b5dde1e93f465fb3f8fc0
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2MoLm:qmbhXDmjr5MOtEvwDpj5cDtKkQZQg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1720-13-0x0000000002840000-0x0000000002850000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2964-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2964-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2964-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2964-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1720-13-0x0000000002840000-0x0000000002850000-memory.dmp	UPX
behavioral1/memory/2964-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2964-28-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2964 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe

pid process

1720 2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2964	asih.exe

pid	process
1720	2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe

description	pid	process	target process
PID 1720 wrote to memory of 2964	1720	2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe	asih.exe
PID 1720 wrote to memory of 2964	1720	2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe	asih.exe
PID 1720 wrote to memory of 2964	1720	2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe	asih.exe
PID 1720 wrote to memory of 2964	1720	2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_d491d527c7789f691ebc0052e161a940_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1720

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2964

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
46KB

MD5
fac8b1d4f4f3c04231d4698918a7cc1c

SHA1
3828be3baea52d19b145d85ef1138dee2e7ac511

SHA256
9e84672a77307b54a42be363e952f4305776010e0a0c0f64cb73b1235345ecc8

SHA512
3fc2b584c1a0ef4be3988ddeaa27fed25671325723d7b36fefbe3da02c3de87c381c1d508b4c8ed29c7e210ebc0f75a65e48e6625183cd6f277ad9ca526b1800

Download Submit
memory/1720-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1720-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1720-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1720-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1720-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/1720-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2964-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2964-20-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2964-27-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/2964-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download