9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab

Analysis

max time kernel
141s
max time network
122s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
03/06/2024, 01:23

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General

Target

9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe
Size

66KB
MD5

4482a8a0a427f0fed17e2d335f8dd60b
SHA1

710b2921439ef256ca39de9be25c8f07f5b876a2
SHA256

9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab
SHA512

a74c4bf18bf05505d61d7cd51b475bbc9c7f6f3653d73063d2ec9b1b10a54508873220dd9a0104759184e920c6db81872915fe98b7884f5393745c7025ad218b
SSDEEP

768:ZrItKyw5WHXfQIhIiIk9ecAaVPD96KyX6b:Zr3Z5IfQIR81ad5yX6b

Score

9^/10

evasion

Malware Config

Signatures

Detects Windows executables referencing non-Windows User-Agents 5 IoCs

resource	yara_rule
behavioral1/memory/308-0-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/files/0x000b000000012272-3.dat	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1992-5-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/308-6-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral1/memory/1992-7-0x0000000000400000-0x0000000000411000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

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
2612	attrib.exe

Deletes itself 1 IoCs

pid	Process
2720	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1992	zskhost.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\zskhost.exe	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe
File opened for modification	C:\Windows\Debug\zskhost.exe	attrib.exe
File created	C:\Windows\Debug\zskhost.exe	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 308 wrote to memory of 2612	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	28
PID 308 wrote to memory of 2612	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	28
PID 308 wrote to memory of 2612	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	28
PID 308 wrote to memory of 2612	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	28
PID 308 wrote to memory of 2720	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	31
PID 308 wrote to memory of 2720	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	31
PID 308 wrote to memory of 2720	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	31
PID 308 wrote to memory of 2720	308	9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe	31

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2612	attrib.exe

C:\Users\Admin\AppData\Local\Temp\9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe
"C:\Users\Admin\AppData\Local\Temp\9a012f59dd405d595988e26ac1adfd46b377d93d8e7002843609a57eaea237ab.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:308
- C:\Windows\SysWOW64\attrib.exe
  attrib +a +s +h +r C:\Windows\Debug\zskhost.exe
  2⤵
  - Sets file to hidden
  - Drops file in Windows directory
  - Views/modifies file attributes
  PID:2612
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\9A012F~1.EXE > nul
  2⤵
  - Deletes itself
  PID:2720

C:\Windows\Debug\zskhost.exe
C:\Windows\Debug\zskhost.exe
1⤵
- Executes dropped EXE
PID:1992

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

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\Debug\zskhost.exe

Filesize
66KB

MD5
58a37e82b1180e48a7b5605305e3d50a

SHA1
7ee4416b37b9f120b35135e65217fa7a161a0d97

SHA256
08e7c8fc8a6ded4fbd5e0d9c7f925aa2a6720d2ef88f5cc519a771b11472fb3b

SHA512
3cf903f96e4cd402a298af03b8feb76697032e028b9d3b4da616b1a893a2b4a1e0446c1637c4d01a23fea3ee067b483b794443aa79fa8a3cecda641efcf539e6

Download Submit
memory/308-0-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/308-6-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1992-5-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1992-7-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads