formbook | 2bea70091eb6858272f4fb047c47b8accb79886682cc744f2455561923a72ca6

General

Target

2.rtf
Size

202KB
MD5

96699d7c92183547a08b317df6f39695
SHA1

bdb797743b66daaa681041ef258ea964b834442a
SHA256

2bea70091eb6858272f4fb047c47b8accb79886682cc744f2455561923a72ca6
SHA512

27884bb6b04eabaf9faaff4fc5876f464ab3f75ba8a009453ddcfaffd041a663324188b63f57a970740f4bfd5975cefd2563bbcbdfe2be2db8919ca044124388
SSDEEP

6144:QuZpe2ClhlgNs8joPzbqKTcWkepI77WqCh:Qf

Score

10^/10

formbook btrd discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

btrd

Decoy

everslane.com

prairieviewelectric.online

dszvhgd.com

papamuch.com

8129k.vip

jeffreestar.gold

bestguestrentals.com

nvzhuang1.net

anangtoto.com

yxfgor.top

practicalpoppers.com

thebestanglephotography.online

koormm.top

criika.net

audioflow.online

380747.net

jiuguanwang.net

bloxequities.com

v321c.com

sugar.monster

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2116-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2116-29-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1012-32-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	2724	EQNEDT32.EXE

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2032	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
2732	odsxbin20309.exe
2116	odsxbin20309.exe

Loads dropped DLL 1 IoCs

pid	Process
2724	EQNEDT32.EXE

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2116	2732	odsxbin20309.exe	36
PID 2116 set thread context of 1252	2116	odsxbin20309.exe	21
PID 2116 set thread context of 1252	2116	odsxbin20309.exe	21
PID 1012 set thread context of 1252	1012	cmmon32.exe	21

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 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	odsxbin20309.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	odsxbin20309.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2724	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1364	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

pid	Process
2116	odsxbin20309.exe
2116	odsxbin20309.exe
2032	powershell.exe
2116	odsxbin20309.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe
1012	cmmon32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2116	odsxbin20309.exe
2116	odsxbin20309.exe
2116	odsxbin20309.exe
2116	odsxbin20309.exe
1012	cmmon32.exe
1012	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2116	odsxbin20309.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	1012	cmmon32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1364	WINWORD.EXE
1364	WINWORD.EXE

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 2732	2724	EQNEDT32.EXE	31
PID 2724 wrote to memory of 2732	2724	EQNEDT32.EXE	31
PID 2724 wrote to memory of 2732	2724	EQNEDT32.EXE	31
PID 2724 wrote to memory of 2732	2724	EQNEDT32.EXE	31
PID 1364 wrote to memory of 2096	1364	WINWORD.EXE	33
PID 1364 wrote to memory of 2096	1364	WINWORD.EXE	33
PID 1364 wrote to memory of 2096	1364	WINWORD.EXE	33
PID 1364 wrote to memory of 2096	1364	WINWORD.EXE	33
PID 2732 wrote to memory of 2032	2732	odsxbin20309.exe	34
PID 2732 wrote to memory of 2032	2732	odsxbin20309.exe	34
PID 2732 wrote to memory of 2032	2732	odsxbin20309.exe	34
PID 2732 wrote to memory of 2032	2732	odsxbin20309.exe	34
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2732 wrote to memory of 2116	2732	odsxbin20309.exe	36
PID 2116 wrote to memory of 1012	2116	odsxbin20309.exe	38
PID 2116 wrote to memory of 1012	2116	odsxbin20309.exe	38
PID 2116 wrote to memory of 1012	2116	odsxbin20309.exe	38
PID 2116 wrote to memory of 1012	2116	odsxbin20309.exe	38
PID 1012 wrote to memory of 2988	1012	cmmon32.exe	39
PID 1012 wrote to memory of 2988	1012	cmmon32.exe	39
PID 1012 wrote to memory of 2988	1012	cmmon32.exe	39
PID 1012 wrote to memory of 2988	1012	cmmon32.exe	39

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1252
- C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
  "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\2.rtf"
  2⤵
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1364
- - C:\Windows\splwow64.exe
    C:\Windows\splwow64.exe 12288
    3⤵
    PID:2096
- C:\Windows\SysWOW64\autochk.exe
  "C:\Windows\SysWOW64\autochk.exe"
  2⤵
  PID:1952

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Roaming\odsxbin20309.exe
  "C:\Users\Admin\AppData\Roaming\odsxbin20309.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2732
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\odsxbin20309.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2032
- - C:\Users\Admin\AppData\Roaming\odsxbin20309.exe
    "C:\Users\Admin\AppData\Roaming\odsxbin20309.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2116
  - - C:\Windows\SysWOW64\cmmon32.exe
      "C:\Windows\SysWOW64\cmmon32.exe"
      4⤵
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1012
    - - C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Users\Admin\AppData\Roaming\odsxbin20309.exe"
        5⤵
        System Location Discovery: System Language Discovery
        
        PID:2988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\odsxbin20309.exe

Filesize
651KB

MD5
5670fc04099860bc61fbca6c054d7ffd

SHA1
b35b270f85846d39c3eaafcf445ea0e7f25112a0

SHA256
7eeedd91e430f1e9c8545e40ca7eb073e4d76104f907734f92aa4110e3ef2b9f

SHA512
d07055e70a7f126c718b16aac950cbf0a09289acb5288492250b50d95a4dc91759ff8f63ab03174d20210651e85ea4d3675ff2599838a3c264cf06d779729023

Download Submit
memory/1012-32-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/1012-31-0x0000000000640000-0x000000000064D000-memory.dmp

Filesize
52KB

Download
memory/1252-28-0x0000000000340000-0x0000000000440000-memory.dmp

Filesize
1024KB

Download
memory/1252-30-0x0000000006B90000-0x0000000006CAC000-memory.dmp

Filesize
1.1MB

Download
memory/1364-2-0x0000000073D6D000-0x0000000073D78000-memory.dmp

Filesize
44KB

Download
memory/1364-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1364-16-0x0000000073D6D000-0x0000000073D78000-memory.dmp

Filesize
44KB

Download
memory/1364-0-0x000000002F1C1000-0x000000002F1C2000-memory.dmp

Filesize
4KB

Download
memory/2116-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2116-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2116-20-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2116-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2116-29-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2732-17-0x00000000059F0000-0x0000000005A66000-memory.dmp

Filesize
472KB

Download
memory/2732-15-0x0000000000470000-0x000000000048E000-memory.dmp

Filesize
120KB

Download
memory/2732-14-0x0000000001000000-0x00000000010AA000-memory.dmp

Filesize
680KB

Download

Analysis

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