7405830bcd9206b5ab5b27e94c36ab0a730d2f36da6744c2cb132781abffc967

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25/02/2024, 12:35

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General

Target

2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe
Size

49KB
MD5

4f928c70eb2f2605e81b468116c850b0
SHA1

c2e1a092f12fd2000301129a3594c4dee8f80d22
SHA256

7405830bcd9206b5ab5b27e94c36ab0a730d2f36da6744c2cb132781abffc967
SHA512

320f2d9351bc0472ba6eab50ede1890885172d80ba9ee60dd5164a9f772ed5417ef447f474e783115d5a99c9de5f1c57e92bc4f48e6908b3f5eabcb1718df972
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQPdUvH:BbdDmjr+OtEvwDpjMX6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1200-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000122bf-11.dat	CryptoLocker_rule2
behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1200-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00090000000122bf-11.dat	UPX
behavioral1/memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2736	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1200	2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe

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 1200 wrote to memory of 2736	1200	2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe	28
PID 1200 wrote to memory of 2736	1200	2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe	28
PID 1200 wrote to memory of 2736	1200	2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe	28
PID 1200 wrote to memory of 2736	1200	2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_4f928c70eb2f2605e81b468116c850b0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2736

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

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
49KB

MD5
eafda11cf13bd8e72ffaf0371c7498ff

SHA1
10d4a55b15928a08927856ae101f1fef376bb213

SHA256
024680708e2cfe77ce47818600bde2b02090c891367eee0b9207dc94c9669937

SHA512
9d84b9fc639af2866868b42f0881805a2123607a59557bd2ddd72e1b7c1eba9565a643bc04927bbc7c2de94adf9abed9c81b465bba89f799ac06bfcf877ffebd

Download Submit
memory/1200-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1200-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1200-3-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1200-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1200-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2736-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2736-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2736-17-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download