0257296199b8904347e66b6476d5ba5ce9291b5d64704f4cd17d08f6ae08576a

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 16:54

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General

Target

2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe
Size

70KB
MD5

60b3ea851c4c477d506df018e4101339
SHA1

20385ab22538a64fbc11446abe87c0415b19be37
SHA256

0257296199b8904347e66b6476d5ba5ce9291b5d64704f4cd17d08f6ae08576a
SHA512

7382bf74571fdc8bdb7ff3c26988227a58ace1fbb027727557d3532b90ecd50972852cdf999c5b1da437600d1083fb36835436196b3242d99ec02fc65fdae568
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1PL:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAL

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3000-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001228a-11.dat	CryptoLocker_set1
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3000-25-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001228a-11.dat	UPX
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3000-25-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3000	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001228a-11.dat	upx
behavioral1/memory/2068-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3000-25-0x0000000000500000-0x000000000050F000-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 2068 wrote to memory of 3000	2068	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	28
PID 2068 wrote to memory of 3000	2068	2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_60b3ea851c4c477d506df018e4101339_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3000

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
70KB

MD5
3a0dab425e36553abea6bb6d4a71f9ab

SHA1
5efd52be135c9830fb4a1a88b30309730d69193d

SHA256
bd11717841a5593e6bcdb7e3ea4f98fb3c645fbab02c05bb40468e3df60fc092

SHA512
58ef89f00f69492f16b381f255f5c58400762d5993a1ffe123f279bd1263a617481bbee829931c1b76c42f9bdeea5503392cef0d2916005b89820064b0816096

Download Submit
memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2068-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2068-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2068-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3000-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/3000-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download