544a39ed05208387d1864902a5679f493cd3d188308d690ffa3249fd117e52ec

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 00:28

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General

Target

2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
Size

83KB
MD5

2b6ad7edba6c3d6a9eaa445141d26903
SHA1

d6080830b17b44eb7f16f3c86640b985a3808f1a
SHA256

544a39ed05208387d1864902a5679f493cd3d188308d690ffa3249fd117e52ec
SHA512

1de6d33b469b3e625b98f4d6cab5388a8cb606f0c5df37355e90fa37dca233412fd9e23726770448988c1636c14d198eadf479e35982ca0925956e294488a4fb
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1na:zCsanOtEvwDpjk

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_rule2
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000012251-11.dat	CryptoLocker_set1
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000012251-11.dat	UPX
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2540	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2848	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000012251-11.dat	upx
behavioral1/memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2540-27-0x0000000000500000-0x0000000000510000-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 2848 wrote to memory of 2540	2848	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	28
PID 2848 wrote to memory of 2540	2848	2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_2b6ad7edba6c3d6a9eaa445141d26903_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2540

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
83KB

MD5
52e2a820c2ee578cd284a410abf3d401

SHA1
0479232463cbeb94350eee99598fecbe548e7c02

SHA256
efea4cba372784664fddcd0603cf7e358430c4c2e7f6a591a73e8f78644d19b6

SHA512
67240eb8c53a31a84ff11c200f7ddc341b118dc747b8f55e43379d4f262ebec75f0f880bbcd2921fbb05710908c2f70e810627974fa8f333062c72640cdb7952

Download Submit
memory/2540-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2540-19-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2540-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2848-2-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2848-3-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2848-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-16-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download