2e605f03af7eda9334758610937421ca7c54c8ad015a95847670f99dc2fcdbcf

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11/04/2024, 03:25

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General

Target

2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe
Size

84KB
MD5

127db1c95b865f60acd3c31541fe3f5d
SHA1

418a3a0c333c0f7d47f71238edc19e7057237581
SHA256

2e605f03af7eda9334758610937421ca7c54c8ad015a95847670f99dc2fcdbcf
SHA512

24b0fd0870f4e6984b474e101d3ef0cae07b99f52dccbd1a710571322ed1cf30a47b70f1af0ec110470c09c1761e81490a9991aa0d762e6dda4a7247ecfcbc88
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7vM5RQ:T6a+rdOOtEvwDpjNV

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001224e-11.dat	CryptoLocker_rule2
behavioral1/memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000900000001224e-11.dat	CryptoLocker_set1
behavioral1/memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000900000001224e-11.dat	UPX
behavioral1/memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2684	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000900000001224e-11.dat	upx
behavioral1/memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2684-26-0x0000000000500000-0x0000000000510000-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 2044 wrote to memory of 2684	2044	2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe	28
PID 2044 wrote to memory of 2684	2044	2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe	28
PID 2044 wrote to memory of 2684	2044	2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe	28
PID 2044 wrote to memory of 2684	2044	2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_127db1c95b865f60acd3c31541fe3f5d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2684

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
84KB

MD5
c8043483af1cf405d23588cfc0cba1e1

SHA1
7bb96a5af4f297b9c87a18354050ec12cbc5d33c

SHA256
c64379b057e852a1376f82a25c2a28a53895f6528c95ed1aba0109c220934a9b

SHA512
7023b382d514111d3522b1d99c64bc11fac87a288d47999c5ccddb12d49a51d53ff10c33e720cdef1001a96f69f2216e70823d16598db4914c06ab7374d77464

Download Submit
memory/2044-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2044-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2044-2-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2044-3-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2044-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2684-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2684-18-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2684-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2684-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download