formbook | 0386237d9dd5d9280a6ed6c397a2090da52fb9576c923579c90d058aa6a1409f

General

Target

sample1.exe
Size

569KB
MD5

56046153a51fe6eaa8814f9d11ac34f6
SHA1

bd55ff7ab969a8aa5485a6c5c6844e9224780dba
SHA256

abd47175466abe2058151e12919ca9501497dbb286909bf7896d20d59fe73ef6
SHA512

fd92ff39626538835b8e8eb63c1fbd6c0828d0fc22261077c83b13ce838f72aac58bda29547c3bc3d356e4c4e9af5c8ae5061648fbebd5040b30d31883183770
SSDEEP

12288:89KZTldLdFz3HEJi5LAWePIBD0WZqkyn2qDdzffF8jo+P1:89mnLnEId+WuFFfNSP1

Score

10^/10

formbook kbm discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kbm

Decoy

qyhattj.icu

kyrenegordo.com

tprgaming.com

sparklemodelscebu.com

bladeha.com

19625ne23ave.com

bigbossgreezy.com

topbusinesskerala.com

aikqq.com

imprussts.com

hd282.com

esrholding.com

senxiv.net

arcustomwork.com

buscoveterinaria.com

genhayakawa.com

1sttividalebrownies.com

agenciawebdigital.com

planguin.online

blackmantech.institute

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

resource	yara_rule
behavioral1/memory/2720-12-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2720-16-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2720-20-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2616	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2380 set thread context of 2720	2380	sample1.exe	31
PID 2720 set thread context of 1160	2720	sample1.exe	20
PID 2720 set thread context of 1160	2720	sample1.exe	20
PID 1596 set thread context of 1160	1596	wlanext.exe	20

System Location Discovery: System Language Discovery 1 TTPs 3 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	sample1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
2720	sample1.exe
2720	sample1.exe
2720	sample1.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe
1596	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2720	sample1.exe
2720	sample1.exe
2720	sample1.exe
2720	sample1.exe
1596	wlanext.exe
1596	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2720	sample1.exe
Token: SeDebugPrivilege	1596	wlanext.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 2380 wrote to memory of 2720	2380	sample1.exe	31
PID 1160 wrote to memory of 1596	1160	Explorer.EXE	32
PID 1160 wrote to memory of 1596	1160	Explorer.EXE	32
PID 1160 wrote to memory of 1596	1160	Explorer.EXE	32
PID 1160 wrote to memory of 1596	1160	Explorer.EXE	32
PID 1596 wrote to memory of 2616	1596	wlanext.exe	33
PID 1596 wrote to memory of 2616	1596	wlanext.exe	33
PID 1596 wrote to memory of 2616	1596	wlanext.exe	33
PID 1596 wrote to memory of 2616	1596	wlanext.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Users\Admin\AppData\Local\Temp\sample1.exe
  "C:\Users\Admin\AppData\Local\Temp\sample1.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Users\Admin\AppData\Local\Temp\sample1.exe
    "C:\Users\Admin\AppData\Local\Temp\sample1.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2720
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.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:1596
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\sample1.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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/1160-22-0x0000000004F80000-0x00000000050AF000-memory.dmp

Filesize
1.2MB

Download
memory/1160-23-0x0000000006C00000-0x0000000006D89000-memory.dmp

Filesize
1.5MB

Download
memory/1160-18-0x0000000004F80000-0x00000000050AF000-memory.dmp

Filesize
1.2MB

Download
memory/1596-26-0x00000000005F0000-0x0000000000606000-memory.dmp

Filesize
88KB

Download
memory/1596-24-0x00000000005F0000-0x0000000000606000-memory.dmp

Filesize
88KB

Download
memory/2380-3-0x00000000744D0000-0x0000000074BBE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-6-0x00000000049E0000-0x0000000004A4C000-memory.dmp

Filesize
432KB

Download
memory/2380-7-0x0000000002050000-0x0000000002084000-memory.dmp

Filesize
208KB

Download
memory/2380-5-0x00000000744D0000-0x0000000074BBE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-4-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2380-0-0x00000000744DE000-0x00000000744DF000-memory.dmp

Filesize
4KB

Download
memory/2380-2-0x0000000000310000-0x0000000000320000-memory.dmp

Filesize
64KB

Download
memory/2380-13-0x00000000744D0000-0x0000000074BBE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-1-0x00000000008A0000-0x0000000000934000-memory.dmp

Filesize
592KB

Download
memory/2720-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2720-16-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2720-17-0x0000000000360000-0x0000000000374000-memory.dmp

Filesize
80KB

Download
memory/2720-21-0x00000000003A0000-0x00000000003B4000-memory.dmp

Filesize
80KB

Download
memory/2720-20-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2720-14-0x0000000000AD0000-0x0000000000DD3000-memory.dmp

Filesize
3.0MB

Download
memory/2720-9-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2720-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2720-8-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

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