e79e8a6b9497afd3db77e42a61d628620c0112d1eb5bd9d9710341126e72edff

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/04/2024, 04:51

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General

Target

2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe
Size

55KB
MD5

d224c38d2372ecb66a96e3936c3bbc0f
SHA1

cdbd826347b7cab20453b251d45a5310461aa7b1
SHA256

e79e8a6b9497afd3db77e42a61d628620c0112d1eb5bd9d9710341126e72edff
SHA512

e0ac5b0e9770cd2800eaef93606212db3d2b66f6a17bc058858ab8215cfec0e0c199529fcb834f2a6f89286b9e9c012ae017d88a7d2ba1d51f51a999d95a0e6d
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjla:bP9g/xtCS3Dxx0F

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/780-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1916-17-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000900000001447e-26.dat	CryptoLocker_rule2

UPX dump on OEP (original entry point) 3 IoCs

resource	yara_rule
behavioral1/memory/780-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/memory/1916-17-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000900000001447e-26.dat	UPX

Executes dropped EXE 1 IoCs

pid	Process
1916	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/780-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/memory/1916-17-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000900000001447e-26.dat	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe
1916	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 1916	780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe	28
PID 780 wrote to memory of 1916	780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe	28
PID 780 wrote to memory of 1916	780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe	28
PID 780 wrote to memory of 1916	780	2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-25_d224c38d2372ecb66a96e3936c3bbc0f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:780
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1916

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\gewos.exe

Filesize
55KB

MD5
9d8f5c173f67f949d8a0865960eef8e0

SHA1
0b7f3e758e7c31addd1404dea85a3e88cba2210f

SHA256
fc6b1137bfb16bda60b708d351a1863a170e8f955ac4e297216efe380632c36b

SHA512
24bb131a34a332903de6736d56a21ccb3a25a17c9ff405e45bcfae0a1c95c03f09131cb6b8e4d71f915103aa596f997be68bcb0f745992670145f28236a0ee32

Download Submit
memory/780-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/780-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/780-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/780-3-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/780-16-0x00000000007F0000-0x00000000007FE000-memory.dmp

Filesize
56KB

Download
memory/1916-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1916-20-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download