28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7

General

Target

28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe
Size

368KB
MD5

6eaa207129506e7b8b5579eb67ce17f5
SHA1

eb2f66e364f7b8741cff7a95e5b8cbd12f6ca483
SHA256

28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7
SHA512

1e433e901ddbb519d05590a3bf7d88b8df7b577756ce406889db970485941e802465973aeb7ef10a75668de5fc8395ebe73116b922363ee7e3c4aef0630b7ced
SSDEEP

6144:5JgmYA/nVA9JATAoQSHBjQP/sC94mrJx2XtjXmK6cAQJNElb6dPURN5Fpg:3gmYA/n0eDBjQPphdxmj2LcAEmlb+UpE

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1580	tktdt.exe

Executes dropped EXE 2 IoCs

pid	Process
1580	tktdt.exe
2308	tgikfmtmh.exe

Loads dropped DLL 1 IoCs

pid	Process
2308	tgikfmtmh.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ProMark = "c:\\Program Files\\rnatz\\tgikfmtmh.exe \"c:\\Program Files\\rnatz\\tgikfmtmh.dll\",Clean"	tgikfmtmh.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\a:	tgikfmtmh.exe
File opened (read-only)	\??\i:	tgikfmtmh.exe
File opened (read-only)	\??\o:	tgikfmtmh.exe
File opened (read-only)	\??\y:	tgikfmtmh.exe
File opened (read-only)	\??\e:	tgikfmtmh.exe
File opened (read-only)	\??\u:	tgikfmtmh.exe
File opened (read-only)	\??\x:	tgikfmtmh.exe
File opened (read-only)	\??\b:	tgikfmtmh.exe
File opened (read-only)	\??\g:	tgikfmtmh.exe
File opened (read-only)	\??\h:	tgikfmtmh.exe
File opened (read-only)	\??\j:	tgikfmtmh.exe
File opened (read-only)	\??\k:	tgikfmtmh.exe
File opened (read-only)	\??\l:	tgikfmtmh.exe
File opened (read-only)	\??\m:	tgikfmtmh.exe
File opened (read-only)	\??\p:	tgikfmtmh.exe
File opened (read-only)	\??\q:	tgikfmtmh.exe
File opened (read-only)	\??\r:	tgikfmtmh.exe
File opened (read-only)	\??\s:	tgikfmtmh.exe
File opened (read-only)	\??\v:	tgikfmtmh.exe
File opened (read-only)	\??\n:	tgikfmtmh.exe
File opened (read-only)	\??\t:	tgikfmtmh.exe
File opened (read-only)	\??\w:	tgikfmtmh.exe
File opened (read-only)	\??\z:	tgikfmtmh.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	tgikfmtmh.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\rnatz\tgikfmtmh.exe	tktdt.exe
File opened for modification	\??\c:\Program Files\rnatz	tktdt.exe
File created	\??\c:\Program Files\rnatz\tgikfmtmh.dll	tktdt.exe
File created	\??\c:\Program Files\rnatz\tgikfmtmh.exe	tktdt.exe

System Location Discovery: System Language Discovery 1 TTPs 5 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	28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tktdt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tgikfmtmh.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4980	cmd.exe
4660	PING.EXE

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	tgikfmtmh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	tgikfmtmh.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4660	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2308	tgikfmtmh.exe
2308	tgikfmtmh.exe
2308	tgikfmtmh.exe
2308	tgikfmtmh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2308	tgikfmtmh.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
376	28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe
1580	tktdt.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 376 wrote to memory of 4980	376	28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe	82
PID 376 wrote to memory of 4980	376	28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe	82
PID 376 wrote to memory of 4980	376	28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe	82
PID 4980 wrote to memory of 4660	4980	cmd.exe	84
PID 4980 wrote to memory of 4660	4980	cmd.exe	84
PID 4980 wrote to memory of 4660	4980	cmd.exe	84
PID 4980 wrote to memory of 1580	4980	cmd.exe	85
PID 4980 wrote to memory of 1580	4980	cmd.exe	85
PID 4980 wrote to memory of 1580	4980	cmd.exe	85
PID 1580 wrote to memory of 2308	1580	tktdt.exe	86
PID 1580 wrote to memory of 2308	1580	tktdt.exe	86
PID 1580 wrote to memory of 2308	1580	tktdt.exe	86

C:\Users\Admin\AppData\Local\Temp\28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe
"C:\Users\Admin\AppData\Local\Temp\28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:376
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tktdt.exe "C:\Users\Admin\AppData\Local\Temp\28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4980
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:4660
- - C:\Users\Admin\AppData\Local\Temp\tktdt.exe
    C:\Users\Admin\AppData\Local\Temp\\tktdt.exe "C:\Users\Admin\AppData\Local\Temp\28d594f08f04f09e8fa2e900d3c25a174a0b31b2e856dd38caa8e9196903d1c7.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - \??\c:\Program Files\rnatz\tgikfmtmh.exe
      "c:\Program Files\rnatz\tgikfmtmh.exe" "c:\Program Files\rnatz\tgikfmtmh.dll",Clean C:\Users\Admin\AppData\Local\Temp\tktdt.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Adds Run key to start application
      Enumerates connected drives
      Writes to the Master Boot Record (MBR)
      System Location Discovery: System Language Discovery
      Checks processor information in registry
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Peripheral Device Discovery

Query Registry

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\rnatz\tgikfmtmh.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\tktdt.exe

Filesize
368KB

MD5
28725d293d59560112bae096c52ba9d7

SHA1
1d63bf1c53f9ff58a720e78eaa1c2be94830998b

SHA256
df29dcffc035743ee795e65318779ac2e4977f73a4b6dec1df57bacd8b17ab41

SHA512
351d4b97c522ac5f53c596e84bba4a09c54c38ba113670bd36f230e2d0fe9529c24377743cb6743a51dd1815a78ff8b47b12d9e9c324c80c1e7bbd47bae466aa

Download Submit
\??\c:\Program Files\rnatz\tgikfmtmh.dll

Filesize
160KB

MD5
4abf258cceaba01b6f08b02831ec2798

SHA1
7311b1d3dbdd0ac0ef2078d774de89e1812f7fef

SHA256
5fc0c35478c1a34f6a5afe25da654aa53cfd4c7fb66d4f6392458db90c1c232d

SHA512
6ce4e275621e2c198f112b33193d9610d96c666592629dfe78cb79e83f592171fa78cc42e9935b93254d425ed9d687fec8747719ce3b1c94c7aa0c6b376c2554

Download Submit
memory/376-0-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/376-2-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1580-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2308-14-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/2308-15-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download
memory/2308-17-0x0000000010000000-0x0000000010058000-memory.dmp

Filesize
352KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads