b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039

General

Target

b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
Size

557KB
MD5

f9d3a56b68480206a6768e55dee2c010
SHA1

1fb359d5d49acd58c64c12eadb73ce618a925ff4
SHA256

b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039
SHA512

44c7613b25f653b6c14f140ccc470cef91804f9d2d6caf42bdcdb283571340a8e251f2f33cece2ec8eeb6edc305fafe8529e4450ce4a03bb02fac03a8692c5d4
SSDEEP

6144:AhBqzw2w/0s/DbAgeonk7n7m8po+yUOKKNG0IxSjXKP+c:aqzw2wsEDbZ67fpLyUB/5qLc

Score

7^/10

bootkit discovery persistence spyware stealer upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
2784	wiebrrte.exe

Executes dropped EXE 2 IoCs

pid	Process
2784	wiebrrte.exe
2736	obt.exe

Loads dropped DLL 7 IoCs

pid	Process
2796	cmd.exe
2796	cmd.exe
2784	wiebrrte.exe
2736	obt.exe
2736	obt.exe
2736	obt.exe
2736	obt.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

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/3068-0-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/3068-2-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/files/0x00090000000120f9-5.dat	upx
behavioral1/memory/2784-8-0x0000000000400000-0x000000000048B000-memory.dmp	upx
behavioral1/memory/2784-15-0x0000000000400000-0x000000000048B000-memory.dmp	upx

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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\dtfd = "c:\\Program Files\\yevsefr\\obt.exe \"c:\\Program Files\\yevsefr\\obtrk.dll\",DoAddToFavDlg"	obt.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:	obt.exe
File opened (read-only)	\??\x:	obt.exe
File opened (read-only)	\??\y:	obt.exe
File opened (read-only)	\??\j:	obt.exe
File opened (read-only)	\??\p:	obt.exe
File opened (read-only)	\??\h:	obt.exe
File opened (read-only)	\??\i:	obt.exe
File opened (read-only)	\??\n:	obt.exe
File opened (read-only)	\??\q:	obt.exe
File opened (read-only)	\??\r:	obt.exe
File opened (read-only)	\??\u:	obt.exe
File opened (read-only)	\??\a:	obt.exe
File opened (read-only)	\??\g:	obt.exe
File opened (read-only)	\??\z:	obt.exe
File opened (read-only)	\??\w:	obt.exe
File opened (read-only)	\??\k:	obt.exe
File opened (read-only)	\??\m:	obt.exe
File opened (read-only)	\??\l:	obt.exe
File opened (read-only)	\??\o:	obt.exe
File opened (read-only)	\??\t:	obt.exe
File opened (read-only)	\??\v:	obt.exe
File opened (read-only)	\??\b:	obt.exe
File opened (read-only)	\??\e:	obt.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	obt.exe

Drops file in Program Files directory 4 IoCs

description	ioc	Process
File opened for modification	\??\c:\Program Files\yevsefr	wiebrrte.exe
File created	\??\c:\Program Files\yevsefr\obtrk.dll	wiebrrte.exe
File created	\??\c:\Program Files\yevsefr\obt.exe	wiebrrte.exe
File opened for modification	\??\c:\Program Files\yevsefr\obt.exe	wiebrrte.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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wiebrrte.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	obt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.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

pid	Process
2796	cmd.exe
2876	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

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

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2876	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2736	obt.exe
2736	obt.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2736	obt.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3068	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
2784	wiebrrte.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3068 wrote to memory of 2796	3068	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	30
PID 3068 wrote to memory of 2796	3068	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	30
PID 3068 wrote to memory of 2796	3068	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	30
PID 3068 wrote to memory of 2796	3068	b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe	30
PID 2796 wrote to memory of 2876	2796	cmd.exe	32
PID 2796 wrote to memory of 2876	2796	cmd.exe	32
PID 2796 wrote to memory of 2876	2796	cmd.exe	32
PID 2796 wrote to memory of 2876	2796	cmd.exe	32
PID 2796 wrote to memory of 2784	2796	cmd.exe	33
PID 2796 wrote to memory of 2784	2796	cmd.exe	33
PID 2796 wrote to memory of 2784	2796	cmd.exe	33
PID 2796 wrote to memory of 2784	2796	cmd.exe	33
PID 2784 wrote to memory of 2736	2784	wiebrrte.exe	34
PID 2784 wrote to memory of 2736	2784	wiebrrte.exe	34
PID 2784 wrote to memory of 2736	2784	wiebrrte.exe	34
PID 2784 wrote to memory of 2736	2784	wiebrrte.exe	34

C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe
"C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3068
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c ping 127.0.0.1 -n 2&C:\Users\Admin\AppData\Local\Temp\\wiebrrte.exe "C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2796
- - 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:2876
- - C:\Users\Admin\AppData\Local\Temp\wiebrrte.exe
    C:\Users\Admin\AppData\Local\Temp\\wiebrrte.exe "C:\Users\Admin\AppData\Local\Temp\b7207a103ce1299e860599afb102e14690bb707c605ad5cc73e86165755a1039N.exe"
    3⤵
    - Deletes itself
    - Executes dropped EXE
    - Loads dropped DLL
    - Drops file in Program Files directory
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2784
  - - \??\c:\Program Files\yevsefr\obt.exe
      "c:\Program Files\yevsefr\obt.exe" "c:\Program Files\yevsefr\obtrk.dll",DoAddToFavDlg C:\Users\Admin\AppData\Local\Temp\wiebrrte.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:2736

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

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\yevsefr\obtrk.dll

Filesize
171KB

MD5
e2e061f253f3283780c95048083e3e3f

SHA1
65294f950ea664b89a0f586508a6346b898a11f8

SHA256
70828e5d1f31ea32edf2793ea599cc5add9501ff42e006a19822e4bab81317c5

SHA512
f7308bec973b6b3937371eba4e20eb2dd987c1efe96d5e1b6c0e003543751e000e5daac2663f420f16ccfe9f9656f5d0e4db9269be83503de5c22a20872e9940

Download Submit
\Program Files\yevsefr\obt.exe

Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

Download Submit
\Users\Admin\AppData\Local\Temp\wiebrrte.exe

Filesize
557KB

MD5
14d5e36ad0bbb3531a429ccdc86bebd7

SHA1
c98c033732ebe7f930177d2c0d558adce79af8cf

SHA256
d593348f5725783483743c601cf02ccbbb79447a12601c6f1b77fe23d23e3253

SHA512
454019b5640d121bc4cfc4ce0bf1c99df4c1b35fc699ad373b7386aac44ef1c60d7742efc2ad967e43e51e0905cfcb50469c3b2f560b6d373a32c74e1bfc3289

Download Submit
memory/2736-26-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2736-22-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2736-23-0x0000000000190000-0x0000000000192000-memory.dmp

Filesize
8KB

Download
memory/2736-24-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2736-25-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2736-27-0x0000000000190000-0x0000000000192000-memory.dmp

Filesize
8KB

Download
memory/2736-31-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2736-32-0x0000000010000000-0x0000000010052000-memory.dmp

Filesize
328KB

Download
memory/2784-8-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2784-15-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/2796-7-0x0000000000250000-0x00000000002DB000-memory.dmp

Filesize
556KB

Download
memory/3068-2-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download
memory/3068-0-0x0000000000400000-0x000000000048B000-memory.dmp

Filesize
556KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads