c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2

General

Target

c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe
Size

210KB
MD5

dc49b618cc414c7bb8eb51d83cff719d
SHA1

47c7bb2c52be285a9f764a0478d86479c635fe3d
SHA256

c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2
SHA512

b11385906a482fdd923a0f788190ca6b164964aec86d7db068f2978d64bbab301884c81820542520b9e9b3dc280373892f5e3091de565940fdd172bab8c032ad
SSDEEP

6144:uVtV0QPQCnSQsTEWYChnUnPJuHC3vcWY:ubVQk1wnGACvc

Score

9^/10

Malware Config

Signatures

Detects executables containing base64 encoded User Agent 2 IoCs

resource	yara_rule
behavioral2/memory/2088-16-0x0000000010000000-0x0000000010054000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent
behavioral2/memory/2088-18-0x0000000010000000-0x0000000010054000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_B64_Encoded_UserAgent

Deletes itself 1 IoCs

pid	Process
1124	yiioc.exe

Executes dropped EXE 2 IoCs

pid	Process
1124	yiioc.exe
2088	ybntbtmr.exe

Loads dropped DLL 1 IoCs

pid	Process
2088	ybntbtmr.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

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-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Vicity = "c:\\Program Files\\aftni\\ybntbtmr.exe \"c:\\Program Files\\aftni\\ybntbtmr.dll\",Group"	ybntbtmr.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)	\??\s:	ybntbtmr.exe
File opened (read-only)	\??\u:	ybntbtmr.exe
File opened (read-only)	\??\v:	ybntbtmr.exe
File opened (read-only)	\??\e:	ybntbtmr.exe
File opened (read-only)	\??\g:	ybntbtmr.exe
File opened (read-only)	\??\i:	ybntbtmr.exe
File opened (read-only)	\??\l:	ybntbtmr.exe
File opened (read-only)	\??\n:	ybntbtmr.exe
File opened (read-only)	\??\t:	ybntbtmr.exe
File opened (read-only)	\??\x:	ybntbtmr.exe
File opened (read-only)	\??\y:	ybntbtmr.exe
File opened (read-only)	\??\b:	ybntbtmr.exe
File opened (read-only)	\??\j:	ybntbtmr.exe
File opened (read-only)	\??\k:	ybntbtmr.exe
File opened (read-only)	\??\o:	ybntbtmr.exe
File opened (read-only)	\??\p:	ybntbtmr.exe
File opened (read-only)	\??\q:	ybntbtmr.exe
File opened (read-only)	\??\a:	ybntbtmr.exe
File opened (read-only)	\??\h:	ybntbtmr.exe
File opened (read-only)	\??\m:	ybntbtmr.exe
File opened (read-only)	\??\r:	ybntbtmr.exe
File opened (read-only)	\??\w:	ybntbtmr.exe
File opened (read-only)	\??\z:	ybntbtmr.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	ybntbtmr.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File created	\??\c:\Program Files\aftni\ybntbtmr.dll	yiioc.exe
File created	\??\c:\Program Files\aftni\ybntbtmr.exe	yiioc.exe
File opened for modification	\??\c:\Program Files\aftni\ybntbtmr.exe	yiioc.exe
File opened for modification	\??\c:\Program Files\aftni	yiioc.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	ybntbtmr.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	ybntbtmr.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4940	PING.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2088	ybntbtmr.exe
2088	ybntbtmr.exe
2088	ybntbtmr.exe
2088	ybntbtmr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2088	ybntbtmr.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3684	c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe
1124	yiioc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3684 wrote to memory of 3360	3684	c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe	87
PID 3684 wrote to memory of 3360	3684	c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe	87
PID 3684 wrote to memory of 3360	3684	c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe	87
PID 3360 wrote to memory of 4940	3360	cmd.exe	90
PID 3360 wrote to memory of 4940	3360	cmd.exe	90
PID 3360 wrote to memory of 4940	3360	cmd.exe	90
PID 3360 wrote to memory of 1124	3360	cmd.exe	92
PID 3360 wrote to memory of 1124	3360	cmd.exe	92
PID 3360 wrote to memory of 1124	3360	cmd.exe	92
PID 1124 wrote to memory of 2088	1124	yiioc.exe	93
PID 1124 wrote to memory of 2088	1124	yiioc.exe	93
PID 1124 wrote to memory of 2088	1124	yiioc.exe	93

C:\Users\Admin\AppData\Local\Temp\c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe
"C:\Users\Admin\AppData\Local\Temp\c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\yiioc.exe "C:\Users\Admin\AppData\Local\Temp\c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3360
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:4940
- - C:\Users\Admin\AppData\Local\Temp\yiioc.exe
    C:\Users\Admin\AppData\Local\Temp\\yiioc.exe "C:\Users\Admin\AppData\Local\Temp\c63790aa506d9ce3119b82414a0b1afd1f8cfbc2887bbdf987dea1d19205f5b2.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Drops file in Program Files directory
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1124
  - - \??\c:\Program Files\aftni\ybntbtmr.exe
      "c:\Program Files\aftni\ybntbtmr.exe" "c:\Program Files\aftni\ybntbtmr.dll",Group C:\Users\Admin\AppData\Local\Temp\yiioc.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:2088

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

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Downloads

C:\Program Files\aftni\ybntbtmr.exe

Filesize
60KB

MD5
889b99c52a60dd49227c5e485a016679

SHA1
8fa889e456aa646a4d0a4349977430ce5fa5e2d7

SHA256
6cbe0e1f046b13b29bfa26f8b368281d2dda7eb9b718651d5856f22cc3e02910

SHA512
08933106eaf338dd119c45cbf1f83e723aff77cc0f8d3fc84e36253b1eb31557a54211d1d5d1cb58958188e32064d451f6c66a24b3963cccd3de07299ab90641

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

Filesize
210KB

MD5
a51cc526901012b6d9310593b89c8939

SHA1
cd7ccca5154e411296054ec8c77eea17694de8b5

SHA256
8e2c98d6a98015f50347f9d7d389735bbfd86466be6fdc10c03678b6f1c9f218

SHA512
eea3621b71447c301e199a775d94e21bf4b91848ea9b3e3fddf0df12761ed4f2ab872abec068686d63543705a8a29a3dbda627046d77496b32721d1cf1ad5985

Download Submit
\??\c:\Program Files\aftni\ybntbtmr.dll

Filesize
148KB

MD5
c3f4597482d058d171cc1dcc4a951b33

SHA1
91b3920ffe039a3eec558272e44689821c440309

SHA256
2c7ff0da67f79c5dee3edbceb32737e1a0cc6a641f715b0a9c07eda56db92ef2

SHA512
ce6cd6d55982dca4fbc50c257ed187c33150605f21ca0f0cc36c1622c4f9ee55bd8e9481ce67fb2ba16b572f9b80bb62d4781eed836fcbfd8adb79f01ccce27e

Download Submit
memory/1124-6-0x0000000000400000-0x0000000000479D2E-memory.dmp

Filesize
487KB

Download
memory/1124-11-0x0000000000400000-0x0000000000479D2E-memory.dmp

Filesize
487KB

Download
memory/2088-15-0x0000000010000000-0x0000000010054000-memory.dmp

Filesize
336KB

Download
memory/2088-16-0x0000000010000000-0x0000000010054000-memory.dmp

Filesize
336KB

Download
memory/2088-18-0x0000000010000000-0x0000000010054000-memory.dmp

Filesize
336KB

Download
memory/3684-0-0x0000000000400000-0x0000000000479D2E-memory.dmp

Filesize
487KB

Download
memory/3684-2-0x0000000000400000-0x0000000000479D2E-memory.dmp

Filesize
487KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads