6bd9cec67f229883076d10479e5124f4fbfac3a50b73c05380e80640598200b0

Analysis

max time kernel
150s
max time network
139s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 15:37

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General

Target

2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe
Size

83KB
MD5

79212e0149ba70feee45467b8ceee60a
SHA1

bb1b6ce99fcbb9a07fc9c92451e277e148f0a658
SHA256

6bd9cec67f229883076d10479e5124f4fbfac3a50b73c05380e80640598200b0
SHA512

7d5f143f2c04f0259fce2d713d83306f2a43059e2d8e16ea17947609e94848591b70b5793e2422661893a9686e772dc825e79c15a03059a47cc0c3797139f2e5
SSDEEP

1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS1k:zCsanOtEvwDpj6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2856-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012254-24.dat	CryptoLocker_rule2
behavioral1/memory/3012-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2856-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000012254-24.dat	CryptoLocker_set1
behavioral1/memory/3012-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2856-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000012254-24.dat	UPX
behavioral1/memory/3012-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3012-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3012	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2856	2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2856-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000012254-24.dat	upx
behavioral1/memory/3012-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3012-25-0x0000000000500000-0x0000000000510000-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 2856 wrote to memory of 3012	2856	2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe	28
PID 2856 wrote to memory of 3012	2856	2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe	28
PID 2856 wrote to memory of 3012	2856	2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe	28
PID 2856 wrote to memory of 3012	2856	2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_79212e0149ba70feee45467b8ceee60a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3012

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

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
83KB

MD5
8372f9573f0c5e704a1888504eddb212

SHA1
d9dc056d77c9a1202b5ae9f895ac6de013c8e4cb

SHA256
6ac0d0d4259977ecb47d9142c262a9ea5221bc79a221487a4785567a9fd1201a

SHA512
12452c0a7e08ccbb89a7e2593725bfd8de55738d2b569d0329d62c10b1fc220b225329ffe698f4bbd78bef304836e829ec81639ea59abfd383194586feb0f9f0

Download Submit
memory/2856-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2856-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2856-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2856-4-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2856-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-18-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/3012-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download