76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c

General

Target

76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe
Size

69KB
MD5

dec861b6a93ae40276835bc0e76f7da9
SHA1

562526803ed27f92d5e33eb033bb43faf5defe52
SHA256

76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c
SHA512

83cda7a7b90e3e2f52177ce6238351c9efac783063a98e0df987c9cfd2ca6cacd12134c68559badb67ce24192463e424a123ea6f3598ed79086ab08bbc89d485
SSDEEP

768:qGHV45EDE477AZbUJx0rZGE3jCELoiMMj6hZ3nE+EXVmkDbjRL8Khc15Z6J1S:qG14P477AxUYrZGoC09k0SkTRHhWqP

Score

9^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2728-20-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2728-19-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2728-18-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral1/memory/2728-21-0x0000000010000000-0x000000001002E000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Blocklisted process makes network request 4 IoCs

Processes:

rundll32.exe

flow pid process

5 2728 rundll32.exe
6 2728 rundll32.exe
10 2728 rundll32.exe
12 2728 rundll32.exe
Deletes itself 1 IoCs

Processes:

xrgkg.exe

pid process

2120 xrgkg.exe
Executes dropped EXE 1 IoCs

Processes:

xrgkg.exe

pid process

2120 xrgkg.exe
Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

2728 rundll32.exe
2728 rundll32.exe
2728 rundll32.exe
2728 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

flow	pid	process
5	2728	rundll32.exe
6	2728	rundll32.exe
10	2728	rundll32.exe
12	2728	rundll32.exe

pid	process
2120	xrgkg.exe

pid	process
2120	xrgkg.exe

pid	process
2728	rundll32.exe
2728	rundll32.exe
2728	rundll32.exe
2728	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-1-5-21-3452737119-3959686427-228443150-1000\Software\Microsoft\Windows\CurrentVersion\Run\EvtMgr = "c:\\windows\\SysWOW64\\rundll32.exe \"c:\\sfpfu\\naksqpeo.dll\",init"	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)	\??\a:	rundll32.exe
File opened (read-only)	\??\l:	rundll32.exe
File opened (read-only)	\??\u:	rundll32.exe
File opened (read-only)	\??\z:	rundll32.exe
File opened (read-only)	\??\b:	rundll32.exe
File opened (read-only)	\??\m:	rundll32.exe
File opened (read-only)	\??\n:	rundll32.exe
File opened (read-only)	\??\s:	rundll32.exe
File opened (read-only)	\??\t:	rundll32.exe
File opened (read-only)	\??\q:	rundll32.exe
File opened (read-only)	\??\x:	rundll32.exe
File opened (read-only)	\??\y:	rundll32.exe
File opened (read-only)	\??\h:	rundll32.exe
File opened (read-only)	\??\j:	rundll32.exe
File opened (read-only)	\??\k:	rundll32.exe
File opened (read-only)	\??\o:	rundll32.exe
File opened (read-only)	\??\p:	rundll32.exe
File opened (read-only)	\??\w:	rundll32.exe
File opened (read-only)	\??\e:	rundll32.exe
File opened (read-only)	\??\g:	rundll32.exe
File opened (read-only)	\??\i:	rundll32.exe
File opened (read-only)	\??\r:	rundll32.exe
File opened (read-only)	\??\v:	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

description	ioc	process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3040 PING.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2728 rundll32.exe
2728 rundll32.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

rundll32.exe

description pid process

Token: SeDebugPrivilege 2728 rundll32.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exexrgkg.exe

pid process

2872 76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe
2120 xrgkg.exe

pid	process
3040	PING.EXE

pid	process
2728	rundll32.exe
2728	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2728	rundll32.exe

pid	process
2872	76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe
2120	xrgkg.exe

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.execmd.exexrgkg.exe

description	pid	process	target process
PID 2872 wrote to memory of 1908	2872	76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe	cmd.exe
PID 2872 wrote to memory of 1908	2872	76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe	cmd.exe
PID 2872 wrote to memory of 1908	2872	76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe	cmd.exe
PID 2872 wrote to memory of 1908	2872	76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe	cmd.exe
PID 1908 wrote to memory of 3040	1908	cmd.exe	PING.EXE
PID 1908 wrote to memory of 3040	1908	cmd.exe	PING.EXE
PID 1908 wrote to memory of 3040	1908	cmd.exe	PING.EXE
PID 1908 wrote to memory of 3040	1908	cmd.exe	PING.EXE
PID 1908 wrote to memory of 2120	1908	cmd.exe	xrgkg.exe
PID 1908 wrote to memory of 2120	1908	cmd.exe	xrgkg.exe
PID 1908 wrote to memory of 2120	1908	cmd.exe	xrgkg.exe
PID 1908 wrote to memory of 2120	1908	cmd.exe	xrgkg.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe
PID 2120 wrote to memory of 2728	2120	xrgkg.exe	rundll32.exe

C:\Users\Admin\AppData\Local\Temp\76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe
"C:\Users\Admin\AppData\Local\Temp\76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2872

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&c:\xrgkg.exe "C:\Users\Admin\AppData\Local\Temp\76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:3040

\??\c:\xrgkg.exe
c:\xrgkg.exe "C:\Users\Admin\AppData\Local\Temp\76364b99afcf418154e809544c29b6a52a6a33a3422ffda4b7a6eb0354613f5c.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2120

\??\c:\windows\SysWOW64\rundll32.exe
c:\windows\system32\rundll32.exe "c:\sfpfu\naksqpeo.dll",init c:\xrgkg.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)
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2728

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

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

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\??\c:\sfpfu\naksqpeo.dll

Filesize
42KB

MD5
36e3fb5964d663272cf1169e1e1ca478

SHA1
58115e08b49505bcbbb5c88a28a86222ba18d5d4

SHA256
c7c41689de030df0f78f471422fa2a6383b36e77c94e7f6f124a96feb3e27ed7

SHA512
daff53b11aa400437a06287707a334a09661c1ef7d0fd8beaf1a874c79c16fe45bd1188343d0623e839d3ead5ea2dd90896e37ccf3b252c7220c74989a9ba442

Download Submit
\??\c:\xrgkg.exe

Filesize
69KB

MD5
1951221c23ee81e60c857b14161f2e9d

SHA1
29730cd39bf61eb5ba88696b8b732a47eb9f9927

SHA256
9bb05d93a2fdb3f1872a66af968508a3aae4811a6cdbc5e5b3cf22cf3be8d9b9

SHA512
7c1840306b1626d010b197b056f1135e356a2bf150420ace0fd8c9bdd642bf66aaa9000ea6ba28cfa18b906ff88b699fd88cd58b920f321d7b7f4e75102bf26b

Download Submit
memory/1908-6-0x0000000000260000-0x0000000000285000-memory.dmp

Filesize
148KB

Download
memory/1908-5-0x0000000000260000-0x0000000000285000-memory.dmp

Filesize
148KB

Download
memory/2120-9-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2120-7-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2728-16-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-17-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-15-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-20-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-19-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-18-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2728-21-0x0000000010000000-0x000000001002E000-memory.dmp

Filesize
184KB

Download
memory/2872-0-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2872-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads