1b7f168df6fa76650fb1964088d07c50939c7811f3b523fcb67a832bb7492c4d

Analysis

max time kernel
110s
max time network
92s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
15-09-2024 08:24

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General

Target

5b73c28e57c07f47f8be6f98350f7900N.exe
Size

63KB
MD5

5b73c28e57c07f47f8be6f98350f7900
SHA1

181dc9ef17db73ca1827b49a757e606ebb0930a5
SHA256

1b7f168df6fa76650fb1964088d07c50939c7811f3b523fcb67a832bb7492c4d
SHA512

e7d4d81abf448e8eca429b3e3922769aa448f26f950e7c81131033d0d719833773a053c93fdb9bf4121a9bd60128c556590412af36f15642b664a0c7feee4c37
SSDEEP

768:MDcpEBMLfQcubV5wGE96YyXDTLdEBBBBL6666s:MDcfLfIbtEbyXfZt

Score

8^/10

defense_evasion discovery evasion

Malware Config

Signatures

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1836	attrib.exe

Deletes itself 1 IoCs

pid	Process
1696	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1708	iuyhost.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\Debug\iuyhost.exe	5b73c28e57c07f47f8be6f98350f7900N.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	5b73c28e57c07f47f8be6f98350f7900N.exe
File opened for modification	C:\Windows\Debug\iuyhost.exe	attrib.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iuyhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5b73c28e57c07f47f8be6f98350f7900N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	2584	5b73c28e57c07f47f8be6f98350f7900N.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 1836	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	30
PID 2584 wrote to memory of 1836	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	30
PID 2584 wrote to memory of 1836	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	30
PID 2584 wrote to memory of 1836	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	30
PID 2584 wrote to memory of 1696	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	33
PID 2584 wrote to memory of 1696	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	33
PID 2584 wrote to memory of 1696	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	33
PID 2584 wrote to memory of 1696	2584	5b73c28e57c07f47f8be6f98350f7900N.exe	33

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1836	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5b73c28e57c07f47f8be6f98350f7900N.exe
"C:\Users\Admin\AppData\Local\Temp\5b73c28e57c07f47f8be6f98350f7900N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\iuyhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Views/modifies file attributes
  PID:1836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\5B73C2~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1696

C:\Windows\Debug\iuyhost.exe
C:\Windows\Debug\iuyhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1708

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\iuyhost.exe

Filesize
63KB

MD5
523f6507d7d3866a4bb63400189e3573

SHA1
29e533d9e6a717d9a643ad73b586ec559e59deec

SHA256
9914a6225e439ce4dabb7679ee57128d0f3141c6f68f6e36b3c86a3d561d4e7c

SHA512
878e70c102d630a0c458316dd5754adbdcf36766101db680716ea9b6e86dda7a951c965859886872a8038843764165a2527033817ec5557355a747eccdd7cdd3

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads