2fe56ec54ec541842097e2f499ef12f542ace254889c4e1d7693608f08ebd7b3

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
12/06/2024, 19:47

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General

Target

2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe
Size

57KB
MD5

b974dd1ab8ce7a654105b66caafd72d6
SHA1

9738777508488d4f68bc47051ac6da5c44b22383
SHA256

2fe56ec54ec541842097e2f499ef12f542ace254889c4e1d7693608f08ebd7b3
SHA512

da496eeb2932a61ba4850282ab379d444c1e100111c83817b6d1c95ae855d187ffdb87ba3bcaaa92e5f6189cb2723e1124e6c87cc8472b00d2dcfc1f2c905365
SSDEEP

768:bP9g/WItCSsAfFaeOcfXVr3BPOz5CFBmNuFgUjlb:bP9g/xtCS3Dxx0Y

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000500000000b309-11.dat	CryptoLocker_rule2
behavioral1/memory/2220-13-0x0000000001E00000-0x0000000001E0E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1304-17-0x0000000000400000-0x000000000040E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000400000-0x000000000040E000-memory.dmp	UPX
behavioral1/files/0x000500000000b309-11.dat	UPX
behavioral1/memory/2220-13-0x0000000001E00000-0x0000000001E0E000-memory.dmp	UPX
behavioral1/memory/1304-17-0x0000000000400000-0x000000000040E000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1304	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2220-0-0x0000000000400000-0x000000000040E000-memory.dmp	upx
behavioral1/files/0x000500000000b309-11.dat	upx
behavioral1/memory/2220-13-0x0000000001E00000-0x0000000001E0E000-memory.dmp	upx
behavioral1/memory/1304-17-0x0000000000400000-0x000000000040E000-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 UnmapMainImage 2 IoCs

pid	Process
2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe
1304	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 1304	2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe	28
PID 2220 wrote to memory of 1304	2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe	28
PID 2220 wrote to memory of 1304	2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe	28
PID 2220 wrote to memory of 1304	2220	2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-12_b974dd1ab8ce7a654105b66caafd72d6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2220
- 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:1304

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\gewos.exe

Filesize
57KB

MD5
dd554ed7748d37dc87791b15f788e65f

SHA1
5878fca6c95f478ef30d2d2113df59364bfc665c

SHA256
68c4f3f08887ccd8dd0299ba7109fd1ae101ba9d0df258be425b5005a3c734b9

SHA512
88c995d78e090788599be394af8820e6eb0ca8a0513ae1e645a390d9ee3520ad467023e6272c757bbde24a6f2f5c1896603157c79f1ed012c42fa81c5ba67f36

Download Submit
memory/1304-17-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1304-26-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2220-0-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/2220-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2220-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2220-9-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2220-13-0x0000000001E00000-0x0000000001E0E000-memory.dmp

Filesize
56KB

Download