5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849

General

Target

5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe
Size

405KB
MD5

81afd4e548307a325a6fa277ed823b21
SHA1

3d3f66ecc9a601598795c9abe961fbcd165a9854
SHA256

5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849
SHA512

9ea7871711b3de60213a70278807fb814912296c7830c55c6bf116bb7648edcf5ea1f642fd0de5302613446931bf6eb059edddcf8a54bf56daa07d650a6169b0
SSDEEP

6144:3w9D91dOrcN3ZGXNYFNmIkYvUIelVjjVtGRyFH4:gtRfJcNYFNm8UhlZGse

Score

8^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Blocklisted process makes network request 10 IoCs

Processes:

rundll32.exe

flow	pid	process
3	2600	rundll32.exe
5	2600	rundll32.exe
6	2600	rundll32.exe
7	2600	rundll32.exe
8	2600	rundll32.exe
9	2600	rundll32.exe
10	2600	rundll32.exe
11	2600	rundll32.exe
13	2600	rundll32.exe
14	2600	rundll32.exe

Deletes itself 1 IoCs

Processes:

naftb.exe

pid process

2344 naftb.exe
Executes dropped EXE 1 IoCs

Processes:

naftb.exe

pid process

2344 naftb.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exerundll32.exe

pid process

944 cmd.exe
944 cmd.exe
2600 rundll32.exe
2600 rundll32.exe
2600 rundll32.exe
2600 rundll32.exe
Reads user/profile data of web browsers 2 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

pid	process
2344	naftb.exe

pid	process
2344	naftb.exe

pid	process
944	cmd.exe
944	cmd.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Dotx = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\Program Files\\fsajxpwz\\kvzmy.dll\",Verify"	rundll32.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

Processes:

rundll32.exe

description	ioc	process
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\v:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\a:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.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

Processes:

rundll32.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 rundll32.exe
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

Processes:

rundll32.exe

pid process

2600 rundll32.exe
Drops file in Program Files directory 2 IoCs

Processes:

naftb.exe

description ioc process

File created \??\c:\Program Files\fsajxpwz\kvzmy.dll naftb.exe
File opened for modification \??\c:\Program Files\fsajxpwz naftb.exe

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe

description	ioc	process
File created	\??\c:\Program Files\fsajxpwz\kvzmy.dll	naftb.exe
File opened for modification	\??\c:\Program Files\fsajxpwz	naftb.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

Processes:

rundll32.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1908 PING.EXE

pid	process
1908	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

rundll32.exe

pid	process
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe
2600	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2600 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exenaftb.exe

pid process

2956 5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe
2344 naftb.exe

description	pid	process
Token: SeDebugPrivilege	2600	rundll32.exe

pid	process
2956	5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe
2344	naftb.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.execmd.exenaftb.exe

description	pid	process	target process
PID 2956 wrote to memory of 944	2956	5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe	cmd.exe
PID 2956 wrote to memory of 944	2956	5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe	cmd.exe
PID 2956 wrote to memory of 944	2956	5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe	cmd.exe
PID 2956 wrote to memory of 944	2956	5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe	cmd.exe
PID 944 wrote to memory of 1908	944	cmd.exe	PING.EXE
PID 944 wrote to memory of 1908	944	cmd.exe	PING.EXE
PID 944 wrote to memory of 1908	944	cmd.exe	PING.EXE
PID 944 wrote to memory of 1908	944	cmd.exe	PING.EXE
PID 944 wrote to memory of 2344	944	cmd.exe	naftb.exe
PID 944 wrote to memory of 2344	944	cmd.exe	naftb.exe
PID 944 wrote to memory of 2344	944	cmd.exe	naftb.exe
PID 944 wrote to memory of 2344	944	cmd.exe	naftb.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe
PID 2344 wrote to memory of 2600	2344	naftb.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe
"C:\Users\Admin\AppData\Local\Temp\5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2956

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\naftb.exe "C:\Users\Admin\AppData\Local\Temp\5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:944

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:1908

C:\Users\Admin\AppData\Local\Temp\naftb.exe
C:\Users\Admin\AppData\Local\Temp\\naftb.exe "C:\Users\Admin\AppData\Local\Temp\5df4887fda73c26fc5194d7f14cd965dc9ade5fb02f26f402473a8f87ba99849.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2344

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\Program Files\fsajxpwz\kvzmy.dll",Verify C:\Users\Admin\AppData\Local\Temp\naftb.exe
4⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2600

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\??\c:\Program Files\fsajxpwz\kvzmy.dll
Filesize
228KB

MD5
968f96c9ca397069504b6d26a41dfd2a

SHA1
549cd5703ae48c833e0990050c135afe19ef8958

SHA256
3a5a17e4d1c007d86915bfa4ee4e9afc4cea1f061f7234520ed26715a97b48ca

SHA512
7426e72f529646e88965e3936e45490cce9d9abcd1c7bcd1ba3b439a7f555f172f0e176bed5ad179d6e5d29dd30d00a6b2a654b2ed2f4087d6527951edef531c

Download Submit
\Users\Admin\AppData\Local\Temp\naftb.exe
Filesize
406KB

MD5
e39770956e4194c29b9bf0af62af30c1

SHA1
2a475fa00098d9a3c49f107a2c6717f8d2ba3d69

SHA256
a255904fc9848499b3641e5832c3a62ecba08d049b605d82a0388b8b44bd7da4

SHA512
253f30b75a4a91d2cd31640a5e30d69073e53acfe55ef5fdb0105eda9583298802d3abd5f86411889d37a0a7fcda939b3f35c8faabe0d997677965005fffd95a

Download Submit
memory/944-5-0x00000000022F0000-0x0000000002354000-memory.dmp

Filesize
400KB

Download
memory/2344-8-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2344-10-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2600-16-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2600-18-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2600-17-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2600-19-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2600-21-0x0000000010000000-0x0000000010080000-memory.dmp

Filesize
512KB

Download
memory/2956-0-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download
memory/2956-2-0x0000000000400000-0x0000000000464000-memory.dmp

Filesize
400KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads