90dd8182b945cc91c4a80491e780ee1a88336b6adc0cc271a677d89fad0cd850

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-05-2024 15:34

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General

Target

2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe
Size

50KB
MD5

42d1ad3c862a1d4bf50a9e217045c112
SHA1

632ee34968e239258b47b9a10a237b280dc09208
SHA256

90dd8182b945cc91c4a80491e780ee1a88336b6adc0cc271a677d89fad0cd850
SHA512

a92ad153ec3a1d92eadb9cd50157519c4a564eeba1d329f7d726bd24362df1182c36e0cc6c0b583dd67cd4a2e6ffbf0e65983f1aa28847da328a64200844dd7e
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mocc9:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3028-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/3028-12-0x0000000000640000-0x0000000000650000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2592-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3028-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2592-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/3028-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/3028-12-0x0000000000640000-0x0000000000650000-memory.dmp	UPX
behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2592-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2592 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe

pid process

3028 2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2592	asih.exe

pid	process
3028	2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe

description	pid	process	target process
PID 3028 wrote to memory of 2592	3028	2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe	asih.exe
PID 3028 wrote to memory of 2592	3028	2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe	asih.exe
PID 3028 wrote to memory of 2592	3028	2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe	asih.exe
PID 3028 wrote to memory of 2592	3028	2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_42d1ad3c862a1d4bf50a9e217045c112_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2592

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
50KB

MD5
c486640f96f6f1e2cce2e18f822f0d19

SHA1
75f9914318b8cf494a44f6705abd3cc97a31add2

SHA256
f0911769104668abdaaafc958e45dc0d0304c03822438b5aaf17e87741f6824a

SHA512
b6156b575ac36a89f6c530f00ec6f97bf701a7a9d0e9dcf8d405b6c9cafe5c426668125ea5db51111d54b640e2814d23c3e1a83c71bdb24ac0a2fa8da3b7da98

Download Submit
memory/2592-19-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2592-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2592-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3028-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3028-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3028-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/3028-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3028-12-0x0000000000640000-0x0000000000650000-memory.dmp

Filesize
64KB

Download
memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download