d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02-12-2022 23:21

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General

Target

d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
Size

227KB
MD5

a4f4e83d338b668b3e5de2a227619e32
SHA1

9f720978a5630b7bf47bf79bc40baea41de84c4f
SHA256

d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d
SHA512

2104c31040e5c661673c478afab474572a864b402ccca762ec17d490220a5200f976c86d97470b231b36f25452c8179d8cc1264dc9f25b87a1c9a4109e3ac813
SSDEEP

3072:jbQi390ezV3Q7RcaDryukKLeC1TkGNmCjxqX/fI/x0s29ygBqQkmDRK:jR39JsXryukHCRXmCjxqX3LZBOE

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4672	Gwufoa.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0002000000022de4-134.dat	upx
behavioral2/files/0x0002000000022de4-135.dat	upx

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
File created	C:\Windows\Gwufoa.exe	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
File opened for modification	C:\Windows\Gwufoa.exe	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	Gwufoa.exe
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	Gwufoa.exe
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\Main	Gwufoa.exe
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Internet Explorer\International	Gwufoa.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe
4672	Gwufoa.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4324	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
4672	Gwufoa.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4324 wrote to memory of 4672	4324	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe	82
PID 4324 wrote to memory of 4672	4324	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe	82
PID 4324 wrote to memory of 4672	4324	d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe	82

C:\Users\Admin\AppData\Local\Temp\d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe
"C:\Users\Admin\AppData\Local\Temp\d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4324
- C:\Windows\Gwufoa.exe
  C:\Windows\Gwufoa.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  PID:4672

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Gwufoa.exe

Filesize
227KB

MD5
a4f4e83d338b668b3e5de2a227619e32

SHA1
9f720978a5630b7bf47bf79bc40baea41de84c4f

SHA256
d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d

SHA512
2104c31040e5c661673c478afab474572a864b402ccca762ec17d490220a5200f976c86d97470b231b36f25452c8179d8cc1264dc9f25b87a1c9a4109e3ac813

Download Submit
C:\Windows\Gwufoa.exe

Filesize
227KB

MD5
a4f4e83d338b668b3e5de2a227619e32

SHA1
9f720978a5630b7bf47bf79bc40baea41de84c4f

SHA256
d12bb05c7c81580da6173250294b439d3b8032f6fd3462171af865d0fdd3243d

SHA512
2104c31040e5c661673c478afab474572a864b402ccca762ec17d490220a5200f976c86d97470b231b36f25452c8179d8cc1264dc9f25b87a1c9a4109e3ac813

Download Submit
C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job

Filesize
426B

MD5
c4e3e4e44cd0b891fc553499e7b3bd82

SHA1
99be75818f0dd002a020e9e7df1202dbad4e3c7c

SHA256
e83f2593fd54b0dac58413432cca0b08cec6be9a6f3b8d3eb4aeca66d1c7e72f

SHA512
8cace30a3ce0921a4344ffa84afc89063e70df046d099ff22d885df6f3ea969c14a300a22c6b62c354f614bfe50d01b3837d7f6952e67daac18496681dce2a32

Download Submit
memory/4324-132-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4324-138-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4324-140-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4672-133-0x0000000000000000-mapping.dmp

Download
memory/4672-137-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4672-139-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download