1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c

General

Target

1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe
Size

158KB
MD5

a9f31f8d926758d2f4dc950ecbbd86bd
SHA1

1a647359d77beb344301fe4df0e7ce08091d4fcd
SHA256

1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c
SHA512

2dc2187deb1ca493b5fba23c8c41d47714874c6fef75641f827840800f289396a70aeeb5584366fc94a776205489f86cebd57e3eea8096978f949e2ecd77e2b6
SSDEEP

3072:oZpYg19EeiLLmjempGuCYooEK1JWaCItULG3rt2Wcora4dIM:OPjEl6jLiQ1JW+Oy3p/F

Score

7^/10

bootkit discovery persistence spyware stealer

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\??\c:\Program Files\nneahsem\bkuyq.dll	acprotect

Deletes itself 1 IoCs

Processes:

ivzft.exe

pid process

1952 ivzft.exe
Executes dropped EXE 2 IoCs

Processes:

ivzft.exebkuy.exe

pid process

1952 ivzft.exe
2860 bkuy.exe
Loads dropped DLL 1 IoCs

Processes:

bkuy.exe

pid process

2860 bkuy.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

pid	process
1952	ivzft.exe

pid	process
1952	ivzft.exe
2860	bkuy.exe

pid	process
2860	bkuy.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

bkuy.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Linycpy = "c:\\Program Files\\nneahsem\\bkuy.exe \"c:\\Program Files\\nneahsem\\bkuyq.dll\",SetHandle"	bkuy.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:

bkuy.exe

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

bkuy.exe

description ioc process

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

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

Drops file in Program Files directory 4 IoCs

Processes:

ivzft.exe

description	ioc	process
File opened for modification	\??\c:\Program Files\nneahsem	ivzft.exe
File created	\??\c:\Program Files\nneahsem\bkuyq.dll	ivzft.exe
File created	\??\c:\Program Files\nneahsem\bkuy.exe	ivzft.exe
File opened for modification	\??\c:\Program Files\nneahsem\bkuy.exe	ivzft.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

Processes:

bkuy.exe1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.execmd.exePING.EXEivzft.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bkuy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.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	ivzft.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

Processes:

cmd.exePING.EXE

pid process

4820 cmd.exe
4064 PING.EXE

pid	process
4820	cmd.exe
4064	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

Processes:

bkuy.exe

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4064 PING.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

bkuy.exe

pid process

2860 bkuy.exe
2860 bkuy.exe
2860 bkuy.exe
2860 bkuy.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bkuy.exe

description pid process

Token: SeDebugPrivilege 2860 bkuy.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exeivzft.exe

pid process

3296 1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe
1952 ivzft.exe

pid	process
4064	PING.EXE

pid	process
2860	bkuy.exe
2860	bkuy.exe
2860	bkuy.exe
2860	bkuy.exe

description	pid	process
Token: SeDebugPrivilege	2860	bkuy.exe

pid	process
3296	1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe
1952	ivzft.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.execmd.exeivzft.exe

description	pid	process	target process
PID 3296 wrote to memory of 4820	3296	1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe	cmd.exe
PID 3296 wrote to memory of 4820	3296	1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe	cmd.exe
PID 3296 wrote to memory of 4820	3296	1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe	cmd.exe
PID 4820 wrote to memory of 4064	4820	cmd.exe	PING.EXE
PID 4820 wrote to memory of 4064	4820	cmd.exe	PING.EXE
PID 4820 wrote to memory of 4064	4820	cmd.exe	PING.EXE
PID 4820 wrote to memory of 1952	4820	cmd.exe	ivzft.exe
PID 4820 wrote to memory of 1952	4820	cmd.exe	ivzft.exe
PID 4820 wrote to memory of 1952	4820	cmd.exe	ivzft.exe
PID 1952 wrote to memory of 2860	1952	ivzft.exe	bkuy.exe
PID 1952 wrote to memory of 2860	1952	ivzft.exe	bkuy.exe
PID 1952 wrote to memory of 2860	1952	ivzft.exe	bkuy.exe

C:\Users\Admin\AppData\Local\Temp\1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe
"C:\Users\Admin\AppData\Local\Temp\1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3296

C:\Windows\SysWOW64\cmd.exe
cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.exe"
2⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:4820

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:4064

C:\Users\Admin\AppData\Local\Temp\ivzft.exe
C:\Users\Admin\AppData\Local\Temp\\ivzft.exe "C:\Users\Admin\AppData\Local\Temp\1db4b21b78143a432611aaa12f1cd0828d6e916f8b2f5c14a3aef049177f816c.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:1952

\??\c:\Program Files\nneahsem\bkuy.exe
"c:\Program Files\nneahsem\bkuy.exe" "c:\Program Files\nneahsem\bkuyq.dll",SetHandle C:\Users\Admin\AppData\Local\Temp\ivzft.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:2860

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\nneahsem\bkuy.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
158KB

MD5
010944785103d8ae1f9ae5c61a9b050d

SHA1
fa3df425a20b422efcd35667d145de8ec3983e89

SHA256
8d8cc207343c6365005c3afe2bbc18480644dedb49d8312048d2411cdd9e76d5

SHA512
9bdb71e6cc26aaa167d5f2c1df3b66c562cc31dfcb837afba6b91aa99a576b097ab196a14083a42863ab6596445c9eaab21a530160c8fdb3d426b5e717ac08b1

Download Submit
\??\c:\Program Files\nneahsem\bkuyq.dll

Filesize
128KB

MD5
178e6648a17f33022bc333bf7b07acfa

SHA1
2f8efec08b067f4bab997eed5e5939dc4d29c567

SHA256
a85e25840efb56ef13be34d67111328ca81f9b4e699b51f957433266ea86b57c

SHA512
04030083c9e82b12cb23b973618944ef156e516b66ae5c6c2dedc8ca32fc10c1a205aad237141e3fb388518e733dffb612d6b97370d6e62308629da77f607f13

Download Submit
memory/1952-11-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download
memory/2860-15-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2860-16-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2860-18-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/2860-20-0x0000000010000000-0x0000000010048000-memory.dmp

Filesize
288KB

Download
memory/3296-0-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download
memory/3296-3-0x0000000000400000-0x000000000042F036-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads