kutaki | 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d

Analysis

max time kernel
172s
max time network
172s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
24/07/2022, 15:07

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General

Target
80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
Size 472KB
Sample220724-shf2xagce2
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b
MD5 SHA1 SHA512

Score

10^/10

kutaki keylogger stealer

Malware Config

Signatures

Kutaki
Information stealer and keylogger that hides inside legitimate Visual Basic applications.
stealer keylogger kutaki

Kutaki Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x000a000000022eaf-134.dat	family_kutaki
behavioral2/files/0x000a000000022eaf-135.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2980	xwdjmsch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	xwdjmsch.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	xwdjmsch.exe

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

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
2980	xwdjmsch.exe
2980	xwdjmsch.exe
2980	xwdjmsch.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 5116	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	80
PID 448 wrote to memory of 5116	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	80
PID 448 wrote to memory of 5116	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	80
PID 448 wrote to memory of 2980	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	83
PID 448 wrote to memory of 2980	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	83
PID 448 wrote to memory of 2980	448	80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe	83

C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe
"C:\Users\Admin\AppData\Local\Temp\80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:448
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:5116
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:2980

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

xwdjmsch.exe

Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xwdjmsch.exe
Size 472KB
SHA256 80914b82ff7fedd60a003009fe4e85a1f3f27b66f8c6be3c575f93ba54cb036d
MD5 99e9541ed3ea8e813d79e1158579cd33
SHA1 0bb3144b8f639beb54dcf7800b7e0b46f7ed60b7
SHA512 948eb85658d3a2dd485d9340cd770147b28952583f353d8027ca69547b438cea44df2fead84d2cb3dada36bb14f3744132bcf172daa7e4dfeee6b059b8119e8b
SSDEEP 12288:RuhorhTPVGB7SLCY1J1kGl8V3eZsemDhkJb:Rt5VG96r1/kGlVZshDhwb
MD5 SHA1 SHA512 SSDEEP

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