formbook | ec66f68731b1c186ac1c87c2520106f85e2a25951303014b9163f51c476846be

General

Target

z83obqahfw.exe
Size

636KB
MD5

946ddca6df1a4ad1bab2b6166dbd516d
SHA1

7362693e6ac7990c7456a47c09a1e7463d855e26
SHA256

ec66f68731b1c186ac1c87c2520106f85e2a25951303014b9163f51c476846be
SHA512

b8ebaa3b5aca238c4e7a4e2486b3d017d044fab1a3eb9e65c3e032751386909117b74a9e48bd5f7969c1fc39c5301d623617ca8d128a8e702163878dc738a43d
SSDEEP

12288:DzaDPw1Qk89Tmyx6Dz1Xy6ICOHdhWMTqJFl/UYp1pinxVy/56:DWLw9gTFg3MYsdhM1cYp1piw56

Score

10^/10

formbook dn13 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn13

Decoy

5q53s.top

f9813.top

ysticsmoke.net

ignorysingeysquints.cfd

yncsignature.live

svp-their.xyz

outya.xyz

wlkflwef3sf2wf.top

etterjugfetkaril.cfd

p9eh2s99b5.top

400108iqlnnqi219.top

ynsu-condition.xyz

ndividual-bfiaen.xyz

anceibizamagazine.net

itrussips.live

orkcubefood.xyz

lindsandfurnishings.shop

ajwmid.top

pigramescentfeatous.shop

mbvcv56789.click

Signatures

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

Formbook payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/2700-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2700-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2572-24-0x00000000000D0000-0x00000000000FF000-memory.dmp	formbook

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

Processes:

powershell.exe

pid	Process
2296	powershell.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
2644	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

z83obqahfw.exez83obqahfw.exesvchost.exe

description	pid	Process	procid_target
PID 2480 set thread context of 2700	2480	z83obqahfw.exe	35
PID 2700 set thread context of 1196	2700	z83obqahfw.exe	21
PID 2700 set thread context of 1196	2700	z83obqahfw.exe	21
PID 2572 set thread context of 1196	2572	svchost.exe	21

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 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:

schtasks.exesvchost.execmd.exez83obqahfw.exepowershell.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	z83obqahfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
2120	schtasks.exe

Suspicious behavior: EnumeratesProcesses 34 IoCs

Processes:

z83obqahfw.exez83obqahfw.exepowershell.exesvchost.exe

pid	Process
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2480	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2296	powershell.exe
2700	z83obqahfw.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

z83obqahfw.exesvchost.exe

pid	Process
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2700	z83obqahfw.exe
2572	svchost.exe
2572	svchost.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

z83obqahfw.exez83obqahfw.exepowershell.exesvchost.exe

description	pid	Process
Token: SeDebugPrivilege	2480	z83obqahfw.exe
Token: SeDebugPrivilege	2700	z83obqahfw.exe
Token: SeDebugPrivilege	2296	powershell.exe
Token: SeDebugPrivilege	2572	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

z83obqahfw.exeExplorer.EXEsvchost.exe

description	pid	Process	procid_target
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2296	2480	z83obqahfw.exe	31
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2120	2480	z83obqahfw.exe	33
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 2480 wrote to memory of 2700	2480	z83obqahfw.exe	35
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 1196 wrote to memory of 2572	1196	Explorer.EXE	36
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37
PID 2572 wrote to memory of 2644	2572	svchost.exe	37

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe
  "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2480
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\ZXTRzzwt.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2296
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ZXTRzzwt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2858.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2120
- - C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe
    "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2700
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - 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:2572
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\z83obqahfw.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2644

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2858.tmp

Filesize
1KB

MD5
67d4e93b746621b8d64a5e14bd750006

SHA1
10f083e8e28a2b5160128d7ce7428b595265f87b

SHA256
0f78cdc975ea29701695469e603295b6fcd1010904afc438240f3190a9d7e3ab

SHA512
1d300549f8227e9be75f9dde60cb1bef0aa52486d670c08e6d69ad11d7d83f2c80c80ce02bd36e984ed8e44dcd545dccdef7b9725d0c4b82ca5c548ec28e3286

Download Submit
memory/2480-20-0x00000000740F0000-0x00000000747DE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-0-0x00000000740FE000-0x00000000740FF000-memory.dmp

Filesize
4KB

Download
memory/2480-3-0x00000000008F0000-0x000000000090E000-memory.dmp

Filesize
120KB

Download
memory/2480-4-0x00000000740FE000-0x00000000740FF000-memory.dmp

Filesize
4KB

Download
memory/2480-5-0x00000000740F0000-0x00000000747DE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-6-0x00000000009A0000-0x0000000000A16000-memory.dmp

Filesize
472KB

Download
memory/2480-2-0x00000000740F0000-0x00000000747DE000-memory.dmp

Filesize
6.9MB

Download
memory/2480-1-0x00000000011B0000-0x0000000001256000-memory.dmp

Filesize
664KB

Download
memory/2572-24-0x00000000000D0000-0x00000000000FF000-memory.dmp

Filesize
188KB

Download
memory/2572-23-0x0000000000C40000-0x0000000000C48000-memory.dmp

Filesize
32KB

Download
memory/2700-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2700-14-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2700-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2700-18-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads