formbook | d8829590bfc10cebf2fcaed57649932d199832cbe2a31bae2368d7d675a7002d

General

Target

malw.exe
Size

581KB
MD5

1728a3584f50d156a0cff349e336fcaf
SHA1

2a96f905684aac4d25f550f8121e08cf52bcd170
SHA256

d8829590bfc10cebf2fcaed57649932d199832cbe2a31bae2368d7d675a7002d
SHA512

56512a128e47bb296d82ea861da5ed694cecac4a726a8c1ce5b12ea8fdd34b22c7b8b632f57e1e30b62d6018cb778117b7cc60c7d25f0276bab47cbb8680a136
SSDEEP

12288:RzE2jI65WKDq+pmj9/uhvYGgNLU2/8Hf0uzBkhCVbcu9eQ:RzNnlDqamj9/WvYvIo6Chqcu

Score

10^/10

formbook bc01 discovery execution rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bc01

Decoy

epatitis-treatment-26155.bond

52cy67sk.bond

nline-degree-6987776.world

ingxingdiandeng-2033.top

mberbreeze.cyou

48xc300mw.autos

obs-for-seniors-39582.bond

tpetersburg-3-tonn.online

egafon-parser.online

172jh.shop

ltraman.pro

bqfhnys.shop

ntercash24-cad.homes

uhtwister.cloud

alk-in-tubs-27353.bond

ucas-saaad.buzz

oko.events

8080713.xyz

refabricated-homes-74404.bond

inaa.boo

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/2624-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2624-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1208-22-0x0000000000070000-0x000000000009F000-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
2724	powershell.exe

Deletes itself 1 IoCs

pid	Process
2092	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2948 set thread context of 2624	2948	malw.exe	33
PID 2624 set thread context of 1228	2624	malw.exe	21
PID 2624 set thread context of 1228	2624	malw.exe	21
PID 1208 set thread context of 1228	1208	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	malw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 29 IoCs

pid	Process
2724	powershell.exe
2948	malw.exe
2948	malw.exe
2624	malw.exe
2624	malw.exe
2624	malw.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe
1208	wscript.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2624	malw.exe
2624	malw.exe
2624	malw.exe
2624	malw.exe
1208	wscript.exe
1208	wscript.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2724	powershell.exe
Token: SeDebugPrivilege	2948	malw.exe
Token: SeDebugPrivilege	2624	malw.exe
Token: SeDebugPrivilege	1208	wscript.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 2724	2948	malw.exe	30
PID 2948 wrote to memory of 2724	2948	malw.exe	30
PID 2948 wrote to memory of 2724	2948	malw.exe	30
PID 2948 wrote to memory of 2724	2948	malw.exe	30
PID 2948 wrote to memory of 2580	2948	malw.exe	32
PID 2948 wrote to memory of 2580	2948	malw.exe	32
PID 2948 wrote to memory of 2580	2948	malw.exe	32
PID 2948 wrote to memory of 2580	2948	malw.exe	32
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 2948 wrote to memory of 2624	2948	malw.exe	33
PID 1228 wrote to memory of 1208	1228	Explorer.EXE	34
PID 1228 wrote to memory of 1208	1228	Explorer.EXE	34
PID 1228 wrote to memory of 1208	1228	Explorer.EXE	34
PID 1228 wrote to memory of 1208	1228	Explorer.EXE	34
PID 1208 wrote to memory of 2092	1208	wscript.exe	35
PID 1208 wrote to memory of 2092	1208	wscript.exe	35
PID 1208 wrote to memory of 2092	1208	wscript.exe	35
PID 1208 wrote to memory of 2092	1208	wscript.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Users\Admin\AppData\Local\Temp\malw.exe
  "C:\Users\Admin\AppData\Local\Temp\malw.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2948
- - 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\malw.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2724
- - C:\Users\Admin\AppData\Local\Temp\malw.exe
    "C:\Users\Admin\AppData\Local\Temp\malw.exe"
    3⤵
    PID:2580
- - C:\Users\Admin\AppData\Local\Temp\malw.exe
    "C:\Users\Admin\AppData\Local\Temp\malw.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2624
- 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:1208
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\malw.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2092

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/1208-22-0x0000000000070000-0x000000000009F000-memory.dmp

Filesize
188KB

Download
memory/1208-21-0x0000000000E10000-0x0000000000E36000-memory.dmp

Filesize
152KB

Download
memory/1228-25-0x00000000071E0000-0x000000000730B000-memory.dmp

Filesize
1.2MB

Download
memory/1228-20-0x0000000007A70000-0x0000000007BF2000-memory.dmp

Filesize
1.5MB

Download
memory/1228-18-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/2624-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2624-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2624-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2624-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2624-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2948-4-0x0000000000570000-0x0000000000582000-memory.dmp

Filesize
72KB

Download
memory/2948-6-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-16-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-7-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-5-0x0000000004C50000-0x0000000004CC6000-memory.dmp

Filesize
472KB

Download
memory/2948-0-0x000000007414E000-0x000000007414F000-memory.dmp

Filesize
4KB

Download
memory/2948-3-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-2-0x0000000074140000-0x000000007482E000-memory.dmp

Filesize
6.9MB

Download
memory/2948-1-0x0000000000140000-0x00000000001D8000-memory.dmp

Filesize
608KB

Download

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