ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda

General

Target

ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe
Size

224KB
MD5

7bd5164ee78d24c88b50a2f902e2d9aa
SHA1

552ac1b320c0feb3e3de70c90ff4cea41d17c1d7
SHA256

ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda
SHA512

5ded8db0954d667e133e566abb0c5194582b0f8568ee49094832f2369cac2cd1997fc58a88948d84f2786fa38ededc507f3a1c5b192b46e8358bcc6eef2e7c1c
SSDEEP

6144:sXJ88CQbV3dj3rHwzBt5vxcalHqqFJqokNbb8pWd1DO:ahCQbR5Ut5r8okN1U

Score

9^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2876-20-0x0000000010000000-0x0000000010065000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2876-21-0x0000000010000000-0x0000000010065000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2876-22-0x0000000010000000-0x0000000010065000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2876-26-0x0000000010000000-0x0000000010065000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2876-35-0x0000000010000000-0x0000000010065000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

Processes:

tjknbza.exe

pid process

3728 tjknbza.exe
Executes dropped EXE 2 IoCs

Processes:

tjknbza.exexwsmszz.exe

pid process

3728 tjknbza.exe
2876 xwsmszz.exe
Loads dropped DLL 1 IoCs

Processes:

xwsmszz.exe

pid process

2876 xwsmszz.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
3728	tjknbza.exe

pid	process
3728	tjknbza.exe
2876	xwsmszz.exe

pid	process
2876	xwsmszz.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

xwsmszz.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Flash = "c:\\Program Files\\aahmezdog\\xwsmszz.exe \"c:\\Program Files\\aahmezdog\\xwsmszz.dll\",CreateFlashAdapterHlink"	xwsmszz.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:

xwsmszz.exe

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

xwsmszz.exe

description ioc process

File opened for modification \??\PHYSICALDRIVE0 xwsmszz.exe

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

Drops file in Program Files directory 4 IoCs

Processes:

tjknbza.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\aahmezdog	tjknbza.exe
File created	\??\c:\Program Files\aahmezdog\xwsmszz.dll	tjknbza.exe
File created	\??\c:\Program Files\aahmezdog\xwsmszz.exe	tjknbza.exe
File opened for modification	\??\c:\Program Files\aahmezdog\xwsmszz.exe	tjknbza.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:

xwsmszz.exe

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

3236 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

xwsmszz.exe

pid process

2876 xwsmszz.exe
2876 xwsmszz.exe
2876 xwsmszz.exe
2876 xwsmszz.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

xwsmszz.exe

description pid process

Token: SeDebugPrivilege 2876 xwsmszz.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exetjknbza.exe

pid process

4348 ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe
3728 tjknbza.exe

pid	process
3236	PING.EXE

pid	process
2876	xwsmszz.exe
2876	xwsmszz.exe
2876	xwsmszz.exe
2876	xwsmszz.exe

description	pid	process
Token: SeDebugPrivilege	2876	xwsmszz.exe

pid	process
4348	ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe
3728	tjknbza.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.execmd.exetjknbza.exe

description	pid	process	target process
PID 4348 wrote to memory of 796	4348	ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe	cmd.exe
PID 4348 wrote to memory of 796	4348	ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe	cmd.exe
PID 4348 wrote to memory of 796	4348	ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe	cmd.exe
PID 796 wrote to memory of 3236	796	cmd.exe	PING.EXE
PID 796 wrote to memory of 3236	796	cmd.exe	PING.EXE
PID 796 wrote to memory of 3236	796	cmd.exe	PING.EXE
PID 796 wrote to memory of 3728	796	cmd.exe	tjknbza.exe
PID 796 wrote to memory of 3728	796	cmd.exe	tjknbza.exe
PID 796 wrote to memory of 3728	796	cmd.exe	tjknbza.exe
PID 3728 wrote to memory of 2876	3728	tjknbza.exe	xwsmszz.exe
PID 3728 wrote to memory of 2876	3728	tjknbza.exe	xwsmszz.exe
PID 3728 wrote to memory of 2876	3728	tjknbza.exe	xwsmszz.exe

C:\Users\Admin\AppData\Local\Temp\ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe
"C:\Users\Admin\AppData\Local\Temp\ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4348

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\tjknbza.exe "C:\Users\Admin\AppData\Local\Temp\ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:796

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 2
3⤵
- Runs ping.exe
PID:3236

C:\Users\Admin\AppData\Local\Temp\tjknbza.exe
C:\Users\Admin\AppData\Local\Temp\\tjknbza.exe "C:\Users\Admin\AppData\Local\Temp\ad2b14433fcc95acfa41bcda4a7f287b60c956114fcf476396dc4a8df2030eda.exe"
3⤵
- Deletes itself
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3728

\??\c:\Program Files\aahmezdog\xwsmszz.exe
"c:\Program Files\aahmezdog\xwsmszz.exe" "c:\Program Files\aahmezdog\xwsmszz.dll",CreateFlashAdapter C:\Users\Admin\AppData\Local\Temp\tjknbza.exe
4⤵
- Executes dropped EXE
- 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:2876

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\aahmezdog\xwsmszz.exe
Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

Download Submit
C:\Users\Admin\AppData\Local\Temp\tjknbza.exe
Filesize
224KB

MD5
ae55933fbc7c1563cbf668e5643e1587

SHA1
6bea10e7ba8f3f2445a3d977dd639c9bd8852638

SHA256
4b499b44fc5d39bd334c0291080fda0cfca9682af3ad44227083d6e8571e590a

SHA512
c0c9021746852d2f4df9bd6fc3a02557caeed0f17889a2d11476ed57cb749f84d8e0d30a3f611cd45c5472e418054bbf171f4100656e54591727a3081a077291

Download Submit
\??\c:\Program Files\aahmezdog\xwsmszz.dll
Filesize
132KB

MD5
49434bd050185159f7c2535931d00d51

SHA1
7ca42acb6b6cd285dab1e445d36694decb24b8ff

SHA256
20773074ebdd8b70cba946772e78d794a5f40c0eba74b5112c885a629714d11f

SHA512
c9c90ed0921ded6b068683b744111c054e436c1a49790d1cd234ccb9282e7d0dc566525c4a34379e3a9369d47918a171814af0535838cbfdb26ea506466b2f43

Download Submit
memory/2876-17-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-16-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-20-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-21-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-22-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-26-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/2876-35-0x0000000010000000-0x0000000010065000-memory.dmp

Filesize
404KB

Download
memory/3728-7-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3728-12-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4348-3-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4348-1-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/4348-0-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads