9922a3809ad2c481544186dd15b1cca8522884bafca885fc25e73a7d2cd0c5c2

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 03:32

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General

Target

2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe
Size

90KB
MD5

154dfc2a8b080efa2325450db484684f
SHA1

474d7f2fb9fbf9b86681c7b7697f9e2d88e7290e
SHA256

9922a3809ad2c481544186dd15b1cca8522884bafca885fc25e73a7d2cd0c5c2
SHA512

04872ce5ad3f09731770fb9009b718faf40115103b4657708bc9a59e684a1a94ef25408a092873e8d899b13c35f97eef224e9b7a2836a2cdaac32405602d1d21
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAA/U:n6a+1SEOtEvwDpjYYvQd2PT

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2756-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e00000001226c-11.dat	CryptoLocker_rule2
behavioral1/memory/1704-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2756-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2756-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e00000001226c-11.dat	CryptoLocker_set1
behavioral1/memory/1704-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2756-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2756-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e00000001226c-11.dat	UPX
behavioral1/memory/1704-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2756-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1704	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2756	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2756-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000e00000001226c-11.dat	upx
behavioral1/memory/1704-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2756-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2756 wrote to memory of 1704	2756	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	28
PID 2756 wrote to memory of 1704	2756	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	28
PID 2756 wrote to memory of 1704	2756	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	28
PID 2756 wrote to memory of 1704	2756	2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_154dfc2a8b080efa2325450db484684f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1704

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
90KB

MD5
27c718403b15e23fea89e8d3ea3231de

SHA1
381d09f546159e178d43891c8cb8b2c2aa398ef4

SHA256
6c15b347a3af728114e13f33ef228de6d7d1d7482d9a9f73e5ed2c71213787b0

SHA512
2e27fb66e81f15cf26132647231e70a620ee7d6751c54e2fcdc9b4350747cb858e65bfb795e556ea4b6405e68aa9426d822135911298b48c122c9b4e84deca2d

Download Submit
memory/1704-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1704-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1704-25-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1704-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2756-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2756-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2756-3-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2756-2-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2756-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download