30de18802fc9233ff077a434daffc2c79cf6b2817dbf010dd2e5be80ef28f38d

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
25/05/2024, 05:27

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General

Target

2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe
Size

81KB
MD5

3f6608a76f5a90f207bf872fce8a5b96
SHA1

6192edf74b77dcf92b67539f3dfe8246dc5d7257
SHA256

30de18802fc9233ff077a434daffc2c79cf6b2817dbf010dd2e5be80ef28f38d
SHA512

dc3af75250af2cf6def8ecdeb24c96162e48b9c97ad3f31bb8bb2c71286655d1f51d9fcf65d71d736c2274b7a0600a80bb3e891234fd0e6cffa5e662e8b96a9b
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QM:zCsanOtEvwDpjo

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e00000001214d-11.dat	CryptoLocker_rule2
behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2108-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e00000001214d-11.dat	CryptoLocker_set1
behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2108-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000e00000001214d-11.dat	UPX
behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2108-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2108	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2936	2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2936-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000e00000001214d-11.dat	upx
behavioral1/memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2108-26-0x0000000000500000-0x0000000000510000-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 2936 wrote to memory of 2108	2936	2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe	28
PID 2936 wrote to memory of 2108	2936	2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe	28
PID 2936 wrote to memory of 2108	2936	2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe	28
PID 2936 wrote to memory of 2108	2936	2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-25_3f6608a76f5a90f207bf872fce8a5b96_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2108

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
81KB

MD5
fa4f713332772d30d573ebadc7cdd27e

SHA1
dc97798308846678ab309c1bd6233ee0d8d1a042

SHA256
c372d4539c4e915de603eb2581e3ff6f3c521e37f90cda2347da6908efe44580

SHA512
480034c9fdbc65700c331be494f6f9f1beb9d225cd54af2537fb22d718023a06b5234a53802484e88c6583db274355675ad5a81a05518e9ef04ae77de4cc54de

Download Submit
memory/2108-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-25-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2108-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2936-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2936-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2936-9-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2936-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2936-13-0x00000000023E0000-0x00000000023F0000-memory.dmp

Filesize
64KB

Download
memory/2936-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download