formbook | 03b5cfab3f0ffdf96e415006004be9a0c05e6365e1d5834984cfd5cea9df85fe

General

Target

tnbws7pyQvMUSjF.exe
Size

731KB
MD5

17a1259bd9c1cb80ac8d105d513bed7f
SHA1

cae2ad2f6a8055ad2145e25324d29033fe1133ae
SHA256

03b5cfab3f0ffdf96e415006004be9a0c05e6365e1d5834984cfd5cea9df85fe
SHA512

f3edf3d6e0c10fd71e411c78fc7af1db10c0c4d56cc796dac113eae2afe96ff30eceb4d0c275a48bded4aeeb353e1a6d22f19f754baf1fd218b8fdaa63ff12b0
SSDEEP

12288:XTrw1bZZn9LJ/x0NHhVdAU/ocoHqXNAN5sNUEj+CQBuxXF29cGNzw1ZW6bEm7N52:DrwLZnR30xhDLocIqXN8u+CQ0FJGVuZN

Score

10^/10

formbook t18n discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

t18n

Decoy

tmusicoregon.net

atici.online

j7u7.xyz

iewunucierwuerwnziqi1.info

ruvabetgiris.website

acik.lat

obsk.top

sphaltpaving-ttp1-shd-us-2.shop

ispensarynearme.news

b3nd.bond

urelook.xyz

gearlpfbm.top

aconstructionjob.bond

killsnexis.info

oshon.xyz

ashabsxw.top

ussiatraiding.buzz

raipsehumus.homes

6ae23rx.forum

edar88vvip.shop

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/2672-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2672-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/3016-22-0x0000000000070000-0x000000000009F000-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

pid	Process
2956	powershell.exe

Deletes itself 1 IoCs

pid	Process
3032	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2932 set thread context of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2672 set thread context of 1236	2672	tnbws7pyQvMUSjF.exe	21
PID 3016 set thread context of 1236	3016	wscript.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 4 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	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tnbws7pyQvMUSjF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
2672	tnbws7pyQvMUSjF.exe
2672	tnbws7pyQvMUSjF.exe
2956	powershell.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe
3016	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2672	tnbws7pyQvMUSjF.exe
2672	tnbws7pyQvMUSjF.exe
2672	tnbws7pyQvMUSjF.exe
3016	wscript.exe
3016	wscript.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2672	tnbws7pyQvMUSjF.exe
Token: SeDebugPrivilege	2956	powershell.exe
Token: SeDebugPrivilege	3016	wscript.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2956	2932	tnbws7pyQvMUSjF.exe	31
PID 2932 wrote to memory of 2956	2932	tnbws7pyQvMUSjF.exe	31
PID 2932 wrote to memory of 2956	2932	tnbws7pyQvMUSjF.exe	31
PID 2932 wrote to memory of 2956	2932	tnbws7pyQvMUSjF.exe	31
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 2932 wrote to memory of 2672	2932	tnbws7pyQvMUSjF.exe	33
PID 1236 wrote to memory of 3016	1236	Explorer.EXE	34
PID 1236 wrote to memory of 3016	1236	Explorer.EXE	34
PID 1236 wrote to memory of 3016	1236	Explorer.EXE	34
PID 1236 wrote to memory of 3016	1236	Explorer.EXE	34
PID 3016 wrote to memory of 3032	3016	wscript.exe	35
PID 3016 wrote to memory of 3032	3016	wscript.exe	35
PID 3016 wrote to memory of 3032	3016	wscript.exe	35
PID 3016 wrote to memory of 3032	3016	wscript.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe
  "C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2932
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2956
- - C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe
    "C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2672
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.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:3016
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\tnbws7pyQvMUSjF.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:3032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

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

memory/1236-14-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1236-24-0x00000000071C0000-0x00000000072E7000-memory.dmp

Filesize
1.2MB

Download
memory/1236-18-0x00000000071C0000-0x00000000072E7000-memory.dmp

Filesize
1.2MB

Download
memory/2672-16-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2672-15-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/2672-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2672-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2672-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2672-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2672-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2932-6-0x0000000000420000-0x0000000000496000-memory.dmp

Filesize
472KB

Download
memory/2932-12-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-3-0x0000000000270000-0x000000000028E000-memory.dmp

Filesize
120KB

Download
memory/2932-2-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-5-0x0000000074D50000-0x000000007543E000-memory.dmp

Filesize
6.9MB

Download
memory/2932-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/2932-4-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/2932-1-0x0000000001220000-0x00000000012DC000-memory.dmp

Filesize
752KB

Download
memory/3016-21-0x0000000000B50000-0x0000000000B76000-memory.dmp

Filesize
152KB

Download
memory/3016-22-0x0000000000070000-0x000000000009F000-memory.dmp

Filesize
188KB

Download

Analysis

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