formbook | 8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e

General

Target

TEKLIF 2002509.exe
Size

596KB
MD5

7a3bfa8d0ab2a9b1258925a73a037393
SHA1

5785960ead180d8709d2b4e182ada67cf751a85c
SHA256

8924d6255fe634004cc46de0a9ee6b4d7c44c1612947d747ebea2a6c06d2a37e
SHA512

aaf55fa5de8f5c8755383694256a369ecaf31337f6a768ffff22e76f16a5413bce56dafe7efb2145c43591d9f214770de0d0596b9094ce65a683157bd0baecd3
SSDEEP

12288:5sy8bQbFshgdcUTejQDo7ryDKdQRFlPHlhBhiJ+UXC/:KIeQr0HyDSQPFc+US/

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 4 IoCs

rat

resource	yara_rule
behavioral1/memory/1816-11-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1816-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1816-23-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2752-25-0x00000000000C0000-0x00000000000EF000-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
2444	powershell.exe

Deletes itself 1 IoCs

pid	Process
2760	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 1816	1148	TEKLIF 2002509.exe	30
PID 1816 set thread context of 1196	1816	TEKLIF 2002509.exe	20
PID 1816 set thread context of 1196	1816	TEKLIF 2002509.exe	20
PID 2752 set thread context of 1196	2752	NETSTAT.EXE	20

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TEKLIF 2002509.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
2752	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1816	TEKLIF 2002509.exe
1816	TEKLIF 2002509.exe
2444	powershell.exe
1816	TEKLIF 2002509.exe
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE
2752	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1816	TEKLIF 2002509.exe
1816	TEKLIF 2002509.exe
1816	TEKLIF 2002509.exe
1816	TEKLIF 2002509.exe
2752	NETSTAT.EXE
2752	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1816	TEKLIF 2002509.exe
Token: SeDebugPrivilege	2444	powershell.exe
Token: SeDebugPrivilege	2752	NETSTAT.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 2444	1148	TEKLIF 2002509.exe	28
PID 1148 wrote to memory of 2444	1148	TEKLIF 2002509.exe	28
PID 1148 wrote to memory of 2444	1148	TEKLIF 2002509.exe	28
PID 1148 wrote to memory of 2444	1148	TEKLIF 2002509.exe	28
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1148 wrote to memory of 1816	1148	TEKLIF 2002509.exe	30
PID 1196 wrote to memory of 2752	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2752	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2752	1196	Explorer.EXE	31
PID 1196 wrote to memory of 2752	1196	Explorer.EXE	31
PID 2752 wrote to memory of 2760	2752	NETSTAT.EXE	32
PID 2752 wrote to memory of 2760	2752	NETSTAT.EXE	32
PID 2752 wrote to memory of 2760	2752	NETSTAT.EXE	32
PID 2752 wrote to memory of 2760	2752	NETSTAT.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\TEKLIF 2002509.exe
  "C:\Users\Admin\AppData\Local\Temp\TEKLIF 2002509.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1148
- - 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\TEKLIF 2002509.exe"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- - C:\Users\Admin\AppData\Local\Temp\TEKLIF 2002509.exe
    "C:\Users\Admin\AppData\Local\Temp\TEKLIF 2002509.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1816
- C:\Windows\SysWOW64\NETSTAT.EXE
  "C:\Windows\SysWOW64\NETSTAT.EXE"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Gathers network information
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\TEKLIF 2002509.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2760

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

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

memory/1148-12-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1148-1-0x0000000001350000-0x00000000013EC000-memory.dmp

Filesize
624KB

Download
memory/1148-2-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1148-3-0x0000000000450000-0x0000000000462000-memory.dmp

Filesize
72KB

Download
memory/1148-4-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1148-5-0x00000000746E0000-0x0000000074DCE000-memory.dmp

Filesize
6.9MB

Download
memory/1148-6-0x0000000004E60000-0x0000000004ED6000-memory.dmp

Filesize
472KB

Download
memory/1148-0-0x00000000746EE000-0x00000000746EF000-memory.dmp

Filesize
4KB

Download
memory/1196-20-0x00000000052E0000-0x0000000005396000-memory.dmp

Filesize
728KB

Download
memory/1196-17-0x0000000003610000-0x0000000003710000-memory.dmp

Filesize
1024KB

Download
memory/1196-22-0x00000000052E0000-0x0000000005396000-memory.dmp

Filesize
728KB

Download
memory/1816-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1816-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1816-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1816-13-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/1816-16-0x0000000000200000-0x0000000000214000-memory.dmp

Filesize
80KB

Download
memory/1816-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1816-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1816-23-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2752-24-0x0000000000760000-0x0000000000769000-memory.dmp

Filesize
36KB

Download
memory/2752-25-0x00000000000C0000-0x00000000000EF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing