kutaki | 7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6

Analysis

max time kernel
119s
max time network
50s
platform
windows7_x64
resource
win7-20220414-en
submitted
08/05/2022, 22:29

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General

Target

7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
Size

1.3MB
MD5

e184e10181e18e7a761530dccb296bd7
SHA1

852260f0776d884678ba949957f31a8da3edb71e
SHA256

7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6
SHA512

7bb7e0c4857eda2782a4e8c2342a2d8dfd6b70df1900ae5443600ae379f7d20efb5100f9992a009d6c12be56054f4afd1d611d0d29574a163b396894612047c1

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 3 IoCs

resource	yara_rule
behavioral1/files/0x000d000000005ba9-59.dat	family_kutaki
behavioral1/files/0x000d000000005ba9-60.dat	family_kutaki
behavioral1/files/0x000d000000005ba9-62.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
1932	sswjtdch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe

Loads dropped DLL 2 IoCs

pid	Process
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.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 64 IoCs

pid	Process
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe
1932	sswjtdch.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 1712	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	28
PID 1096 wrote to memory of 1712	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	28
PID 1096 wrote to memory of 1712	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	28
PID 1096 wrote to memory of 1712	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	28
PID 1096 wrote to memory of 1932	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	30
PID 1096 wrote to memory of 1932	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	30
PID 1096 wrote to memory of 1932	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	30
PID 1096 wrote to memory of 1932	1096	7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe	30

C:\Users\Admin\AppData\Local\Temp\7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe
"C:\Users\Admin\AppData\Local\Temp\7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:1712
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  PID:1932

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe

Filesize
1.3MB

MD5
e184e10181e18e7a761530dccb296bd7

SHA1
852260f0776d884678ba949957f31a8da3edb71e

SHA256
7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6

SHA512
7bb7e0c4857eda2782a4e8c2342a2d8dfd6b70df1900ae5443600ae379f7d20efb5100f9992a009d6c12be56054f4afd1d611d0d29574a163b396894612047c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe

Filesize
1.3MB

MD5
e184e10181e18e7a761530dccb296bd7

SHA1
852260f0776d884678ba949957f31a8da3edb71e

SHA256
7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6

SHA512
7bb7e0c4857eda2782a4e8c2342a2d8dfd6b70df1900ae5443600ae379f7d20efb5100f9992a009d6c12be56054f4afd1d611d0d29574a163b396894612047c1

Download Submit
\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\sswjtdch.exe

Filesize
1.3MB

MD5
e184e10181e18e7a761530dccb296bd7

SHA1
852260f0776d884678ba949957f31a8da3edb71e

SHA256
7c1b70174d26b365555d457f7f564bd3bde4e66d84fd9b0d49b12fffa62daac6

SHA512
7bb7e0c4857eda2782a4e8c2342a2d8dfd6b70df1900ae5443600ae379f7d20efb5100f9992a009d6c12be56054f4afd1d611d0d29574a163b396894612047c1

Download Submit
memory/1096-57-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

Filesize
8KB

Download