468e0d7a4b1070dd6156fb63df8ec84c85cfe31abb9b214adfdf220925186d7b

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 05:41

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General

Target

2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe
Size

54KB
MD5

8503e62f8d7938b273a76cdf33e6468d
SHA1

17c007cb0bb976301c4ebe8557991eb4a64c6a31
SHA256

468e0d7a4b1070dd6156fb63df8ec84c85cfe31abb9b214adfdf220925186d7b
SHA512

1a6adb017092808c84cda63cceec474bf532d7648022fc1c7c897a7874a92829e10ac4facdde6c01c12bae6d4ffdd98239340819da448def7b282dfe076442f6
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOkaX:z6QFElP6n+gKmddpMOtEvwDpj31iko

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000122ee-11.dat	CryptoLocker_rule2
behavioral1/memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2592-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000122ee-11.dat	CryptoLocker_set1
behavioral1/memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2592-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00090000000122ee-11.dat	UPX
behavioral1/memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2592-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2592	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00090000000122ee-11.dat	upx
behavioral1/memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2592-25-0x0000000000500000-0x0000000000510000-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 1992 wrote to memory of 2592	1992	2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe	28
PID 1992 wrote to memory of 2592	1992	2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe	28
PID 1992 wrote to memory of 2592	1992	2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe	28
PID 1992 wrote to memory of 2592	1992	2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_8503e62f8d7938b273a76cdf33e6468d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992
- 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
54KB

MD5
7e50d8f3c333c66edcbf319e8c9a3c38

SHA1
c4e62551d0838ee3aca103587ab2491a4d46f0d9

SHA256
3c5ad7ff754164ccb20bee6b4be4f57ad2a0369ff7496e7a7d095ff9511fbd20

SHA512
ad113b155581f9e3fddc7ae52f74751b4a6ff1e5ea09e5632aefd7c1e15eff9e1a17ac2a672de1b928041cbe640178d8bfa178c46fdc507b6c50c48bf6bcc35c

Download Submit
memory/1992-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1992-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1992-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1992-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2592-17-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2592-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2592-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download