03eedd8434073806ef21959dfde8b1760ec3dfc31dec8d54df65d9037d8e988c

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 09:40

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General

Target

2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe
Size

97KB
MD5

fdaf494e25f969205cce2a02d0ff1dcc
SHA1

2c72e41329b4514002f7a0a8afcaeece132a179c
SHA256

03eedd8434073806ef21959dfde8b1760ec3dfc31dec8d54df65d9037d8e988c
SHA512

30ef3a9962481932cf0e9de9a74b0f49805184e324da3a665f619c36f015fab9b09eee25537333d9bbc8aa49834aa1a4f7be25c5115e46f40441f1bfae2b9dbf
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/bqr:zCsanOtEvwDpjBK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000143d1-11.dat	CryptoLocker_rule2
behavioral1/memory/2696-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/856-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2696-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000143d1-11.dat	CryptoLocker_set1
behavioral1/memory/2696-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/856-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2696-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00090000000143d1-11.dat	UPX
behavioral1/memory/2696-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/856-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2696-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2696	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
856	2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00090000000143d1-11.dat	upx
behavioral1/memory/2696-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/856-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2696-26-0x0000000000500000-0x0000000000510000-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 856 wrote to memory of 2696	856	2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe	28
PID 856 wrote to memory of 2696	856	2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe	28
PID 856 wrote to memory of 2696	856	2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe	28
PID 856 wrote to memory of 2696	856	2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-12_fdaf494e25f969205cce2a02d0ff1dcc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:856
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2696

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\misid.exe

Filesize
97KB

MD5
95da9f458fdf157848156ead25714275

SHA1
d72c22291da8c2bb87bfecb2b0a03b0002ae0cb1

SHA256
a76edfd14156ee62702faf48119bac4207524a0f008568ce1dbb9effcd33bebd

SHA512
13b4ac9df439146ab60b4020e021fd8b9115c128b610488ac898c7b47d2d0941f86324260dd0b28b07581f0dee8322bb2b7998e1b36f12f93e6fe5f39b0df46b

Download Submit
memory/856-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/856-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/856-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/856-9-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/856-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2696-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2696-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2696-18-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2696-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download