50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

Analysis

max time kernel
150s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
05/05/2023, 11:17

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General

Target

Build6.exe
Size

701KB
MD5

b6fc37fce8c66b811adcb11e2a588913
SHA1

f623733af2c004fb9489ee0723574fa01d1d2097
SHA256

50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad
SHA512

7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b
SSDEEP

6144:57A/MmJMsENIsRctX5rUvQSNj0LZOWM8yucn:5U/MmrrU1Nj0LZOd8yus

Score

8^/10

persistence

Malware Config

Signatures

Modifies Installed Components in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Active Setup\Installed Components	explorer.exe

Executes dropped EXE 3 IoCs

pid	Process
2040	Svchost.exe
932	Svchost.exe
1416	Svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
844	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1368 set thread context of 1112	1368	Build6.exe	30
PID 2040 set thread context of 1416	2040	Svchost.exe	41

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
684	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1700	timeout.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Internet Explorer\Toolbar	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Internet Explorer\Toolbar\Locked = "1"	explorer.exe

Modifies registry class 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots	explorer.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1112	Build6.exe
1112	Build6.exe
1112	Build6.exe
2040	Svchost.exe
2040	Svchost.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

description	pid	Process
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: 33	272	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	272	AUDIODG.EXE
Token: 33	272	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	272	AUDIODG.EXE
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeShutdownPrivilege	876	explorer.exe
Token: SeDebugPrivilege	1112	Build6.exe
Token: SeDebugPrivilege	2040	Svchost.exe
Token: SeDebugPrivilege	1416	Svchost.exe
Token: SeShutdownPrivilege	876	explorer.exe

Suspicious use of FindShellTrayWindow 27 IoCs

pid	Process
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe

Suspicious use of SendNotifyMessage 17 IoCs

pid	Process
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe
876	explorer.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 876	1368	Build6.exe	27
PID 1368 wrote to memory of 876	1368	Build6.exe	27
PID 1368 wrote to memory of 876	1368	Build6.exe	27
PID 1368 wrote to memory of 876	1368	Build6.exe	27
PID 876 wrote to memory of 1208	876	explorer.exe	28
PID 876 wrote to memory of 1208	876	explorer.exe	28
PID 876 wrote to memory of 1208	876	explorer.exe	28
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1368 wrote to memory of 1112	1368	Build6.exe	30
PID 1112 wrote to memory of 1456	1112	Build6.exe	32
PID 1112 wrote to memory of 1456	1112	Build6.exe	32
PID 1112 wrote to memory of 1456	1112	Build6.exe	32
PID 1112 wrote to memory of 1456	1112	Build6.exe	32
PID 1112 wrote to memory of 844	1112	Build6.exe	34
PID 1112 wrote to memory of 844	1112	Build6.exe	34
PID 1112 wrote to memory of 844	1112	Build6.exe	34
PID 1112 wrote to memory of 844	1112	Build6.exe	34
PID 1456 wrote to memory of 684	1456	cmd.exe	36
PID 1456 wrote to memory of 684	1456	cmd.exe	36
PID 1456 wrote to memory of 684	1456	cmd.exe	36
PID 1456 wrote to memory of 684	1456	cmd.exe	36
PID 844 wrote to memory of 1700	844	cmd.exe	37
PID 844 wrote to memory of 1700	844	cmd.exe	37
PID 844 wrote to memory of 1700	844	cmd.exe	37
PID 844 wrote to memory of 1700	844	cmd.exe	37
PID 844 wrote to memory of 2040	844	cmd.exe	38
PID 844 wrote to memory of 2040	844	cmd.exe	38
PID 844 wrote to memory of 2040	844	cmd.exe	38
PID 844 wrote to memory of 2040	844	cmd.exe	38
PID 2040 wrote to memory of 1600	2040	Svchost.exe	39
PID 2040 wrote to memory of 1600	2040	Svchost.exe	39
PID 2040 wrote to memory of 1600	2040	Svchost.exe	39
PID 2040 wrote to memory of 1600	2040	Svchost.exe	39
PID 2040 wrote to memory of 932	2040	Svchost.exe	40
PID 2040 wrote to memory of 932	2040	Svchost.exe	40
PID 2040 wrote to memory of 932	2040	Svchost.exe	40
PID 2040 wrote to memory of 932	2040	Svchost.exe	40
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41
PID 2040 wrote to memory of 1416	2040	Svchost.exe	41

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Build6.exe
"C:\Users\Admin\AppData\Local\Temp\Build6.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe"
  2⤵
  - Modifies Installed Components in the registry
  - Modifies Internet Explorer settings
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:876
- - C:\Windows\system32\ctfmon.exe
    ctfmon.exe
    3⤵
    PID:1208
- C:\Users\Admin\AppData\Local\Temp\Build6.exe
  "C:\Users\Admin\AppData\Local\Temp\Build6.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1456
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "Svchost" /tr '"C:\Users\Admin\AppData\Roaming\Svchost.exe"'
      4⤵
      Creates scheduled task(s)
      PID:684
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6817.tmp.bat""
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:844
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:1700
  - - C:\Users\Admin\AppData\Roaming\Svchost.exe
      "C:\Users\Admin\AppData\Roaming\Svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2040
    - - C:\Windows\explorer.exe
        
        "C:\Windows\explorer.exe"
        5⤵
        
        PID:1600
    - - C:\Users\Admin\AppData\Roaming\Svchost.exe
        
        "C:\Users\Admin\AppData\Roaming\Svchost.exe"
        5⤵
        Executes dropped EXE
        
        PID:932
    - - C:\Users\Admin\AppData\Roaming\Svchost.exe
        
        "C:\Users\Admin\AppData\Roaming\Svchost.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1416

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x56c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:272

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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\tmp6817.tmp.bat

Filesize
151B

MD5
2fa89354a8cbbb1ec99ba3628babea59

SHA1
700b16e52f9cc857621fff9af40aba85b54f29d2

SHA256
64f9d5f9ae009d0b32ecdfd09a794157adcc0316ee56703306236cd90452acdb

SHA512
fa1f02475b09f961d54417259a2688ff704f5c6e2bea4601ffc51c9fd49ac82b00c7bdc1c33bcac2440b44ffbff09711b850722d9e165fb01a03ccd29853f526

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp6817.tmp.bat

Filesize
151B

MD5
2fa89354a8cbbb1ec99ba3628babea59

SHA1
700b16e52f9cc857621fff9af40aba85b54f29d2

SHA256
64f9d5f9ae009d0b32ecdfd09a794157adcc0316ee56703306236cd90452acdb

SHA512
fa1f02475b09f961d54417259a2688ff704f5c6e2bea4601ffc51c9fd49ac82b00c7bdc1c33bcac2440b44ffbff09711b850722d9e165fb01a03ccd29853f526

Download Submit
C:\Users\Admin\AppData\Roaming\Svchost.exe

Filesize
701KB

MD5
b6fc37fce8c66b811adcb11e2a588913

SHA1
f623733af2c004fb9489ee0723574fa01d1d2097

SHA256
50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

SHA512
7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b

Download Submit
C:\Users\Admin\AppData\Roaming\Svchost.exe

Filesize
701KB

MD5
b6fc37fce8c66b811adcb11e2a588913

SHA1
f623733af2c004fb9489ee0723574fa01d1d2097

SHA256
50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

SHA512
7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b

Download Submit
C:\Users\Admin\AppData\Roaming\Svchost.exe

Filesize
701KB

MD5
b6fc37fce8c66b811adcb11e2a588913

SHA1
f623733af2c004fb9489ee0723574fa01d1d2097

SHA256
50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

SHA512
7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b

Download Submit
C:\Users\Admin\AppData\Roaming\Svchost.exe

Filesize
701KB

MD5
b6fc37fce8c66b811adcb11e2a588913

SHA1
f623733af2c004fb9489ee0723574fa01d1d2097

SHA256
50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

SHA512
7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b

Download Submit
\Users\Admin\AppData\Roaming\Svchost.exe

Filesize
701KB

MD5
b6fc37fce8c66b811adcb11e2a588913

SHA1
f623733af2c004fb9489ee0723574fa01d1d2097

SHA256
50c741e252a93f02d0d96bf0f5faa200c425a7cced7de84d6b56144bb9eca8ad

SHA512
7b2e72eb5f8cd84033e5ce19707b5a11005b27750ca9b7041b564bf125e85dc6852e8d4d3af7e3e8104030af2a565d423afaa7840cccb8e3a0a0667e0dfad59b

Download Submit
memory/876-83-0x0000000004110000-0x0000000004120000-memory.dmp

Filesize
64KB

Download
memory/876-67-0x0000000003DE0000-0x0000000003DE1000-memory.dmp

Filesize
4KB

Download
memory/876-96-0x0000000003DE0000-0x0000000003DE1000-memory.dmp

Filesize
4KB

Download
memory/1112-59-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-62-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-57-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-61-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1112-60-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-64-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-66-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-58-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1112-68-0x0000000000D50000-0x0000000000D90000-memory.dmp

Filesize
256KB

Download
memory/1368-55-0x0000000004840000-0x0000000004880000-memory.dmp

Filesize
256KB

Download
memory/1368-54-0x0000000000DA0000-0x0000000000E56000-memory.dmp

Filesize
728KB

Download
memory/1416-89-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/1416-95-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1416-93-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2040-81-0x0000000000D00000-0x0000000000DB6000-memory.dmp

Filesize
728KB

Download