c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0

Analysis

max time kernel
120s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
17-04-2024 03:57

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General

Target

c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe
Size

17KB
MD5

d639b1b62abe71e7b4e6d4fa9f846dd1
SHA1

5d1ac99423364339ef928cbd4326aa13ef508dd2
SHA256

c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0
SHA512

b3fb619a1433cadae0fcb2b19486cf7c564cc4db2d10774df1fb4331788eaa06d5355338f2a14d23e776dc112b967fe6db5787e6a7ea4b56df3042355c23ac92
SSDEEP

192:EymT9ilhYPVMq/14GtnuxviG9dqvvgeIEAf7AlC+WN7LWgaA0UxC71:RmRvNPnux6G9c3gW0AC+QLWgarhJ

Score

9^/10

upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000400000-0x000000000040C000-memory.dmp	UPX
behavioral1/memory/1968-2-0x0000000000400000-0x000000000040C000-memory.dmp	UPX
behavioral1/files/0x000a00000001418d-4.dat	UPX
behavioral1/memory/1968-6-0x00000000004A0000-0x00000000004AC000-memory.dmp	UPX
behavioral1/memory/3056-23-0x0000000000400000-0x000000000040C000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3056	opera_autoupdater.exe

Loads dropped DLL 4 IoCs

pid	Process
1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe
3056	opera_autoupdater.exe
3056	opera_autoupdater.exe
3056	opera_autoupdater.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral1/memory/1968-2-0x0000000000400000-0x000000000040C000-memory.dmp	upx
behavioral1/files/0x000a00000001418d-4.dat	upx
behavioral1/memory/1968-6-0x00000000004A0000-0x00000000004AC000-memory.dmp	upx
behavioral1/memory/3056-23-0x0000000000400000-0x000000000040C000-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 7 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28
PID 1968 wrote to memory of 3056	1968	c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe	28

C:\Users\Admin\AppData\Local\Temp\c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe
"C:\Users\Admin\AppData\Local\Temp\c31e26380933c3357060d6995f3ec20099b6727b45202c83c8718549bfb5f5e0.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\opera_autoupdater.exe
  "C:\Users\Admin\AppData\Local\Temp\opera_autoupdater.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3056

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\opera_autoupdater.exe

Filesize
18KB

MD5
99e7c995360972f8830198ff4ea52e42

SHA1
00c39bec014aed9217ae6b5b283892fe0b25f05e

SHA256
046553a1fcc1b467c04049f0fbe92df25d792bef3ca1971a0a041265725e6a9d

SHA512
295e4f6ebe61293e7da8fe43fca484fd1c962b473ee972811f854ba5759919cfce7d6931a2c59e67a11a9b5ad82d1556412fc7575de14039145852a3def86d50

Download Submit
memory/1968-0-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1968-2-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/1968-6-0x00000000004A0000-0x00000000004AC000-memory.dmp

Filesize
48KB

Download
memory/3056-13-0x0000000000020000-0x000000000002C000-memory.dmp

Filesize
48KB

Download
memory/3056-15-0x0000000000020000-0x000000000002C000-memory.dmp

Filesize
48KB

Download
memory/3056-23-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download