kutaki | 14f66c17db2c1ed89fdf14bb8bd1afd81ac66c71ab6f99fdb926f6dcaeba456b

General

Target

TDS Challan.exe
Size

496KB
MD5

9ca01142589187736ef32d73d28973e0
SHA1

307faa96f8186c56e8f670860190e08129d43b5b
SHA256

ac9fec69ac45137f4fc44b568af643e9dc34724e8a110d1f028650fe8e5914bb
SHA512

9ad4906cd5ac83dbcbbe2bf875eb196ddc82d423ddc58c92feb44039d1f0620bfc26ba330eb4afd31d3a14d8094fb21ba30beb6ceba8f5980cf82e59252332de

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/0x000800000001dabb-134.dat	family_kutaki
behavioral2/files/0x000800000001dabb-135.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
2524	rogtdfch.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rogtdfch.exe	TDS Challan.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rogtdfch.exe	TDS Challan.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 value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	rogtdfch.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	rogtdfch.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
1860	TDS Challan.exe
1860	TDS Challan.exe
1860	TDS Challan.exe
2524	rogtdfch.exe
2524	rogtdfch.exe
2524	rogtdfch.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 668	1860	TDS Challan.exe	78
PID 1860 wrote to memory of 668	1860	TDS Challan.exe	78
PID 1860 wrote to memory of 668	1860	TDS Challan.exe	78
PID 1860 wrote to memory of 2524	1860	TDS Challan.exe	81
PID 1860 wrote to memory of 2524	1860	TDS Challan.exe	81
PID 1860 wrote to memory of 2524	1860	TDS Challan.exe	81

C:\Users\Admin\AppData\Local\Temp\TDS Challan.exe
"C:\Users\Admin\AppData\Local\Temp\TDS Challan.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:668
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rogtdfch.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rogtdfch.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:2524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

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\rogtdfch.exe

Filesize
496KB

MD5
9ca01142589187736ef32d73d28973e0

SHA1
307faa96f8186c56e8f670860190e08129d43b5b

SHA256
ac9fec69ac45137f4fc44b568af643e9dc34724e8a110d1f028650fe8e5914bb

SHA512
9ad4906cd5ac83dbcbbe2bf875eb196ddc82d423ddc58c92feb44039d1f0620bfc26ba330eb4afd31d3a14d8094fb21ba30beb6ceba8f5980cf82e59252332de

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

Filesize
496KB

MD5
9ca01142589187736ef32d73d28973e0

SHA1
307faa96f8186c56e8f670860190e08129d43b5b

SHA256
ac9fec69ac45137f4fc44b568af643e9dc34724e8a110d1f028650fe8e5914bb

SHA512
9ad4906cd5ac83dbcbbe2bf875eb196ddc82d423ddc58c92feb44039d1f0620bfc26ba330eb4afd31d3a14d8094fb21ba30beb6ceba8f5980cf82e59252332de

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Analysis

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