formbook | acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b

General

Target

acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
Size

1.0MB
MD5

e9e768aa357a7e34348c69e41444964d
SHA1

4930b85e20b7967cf0afb1d9ae9ae57ca4d373c9
SHA256

acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b
SHA512

6394564277e7077d9e326cc0f34f3c6ef945ed4d2e6bd812daaef879bb957edd4c8032df14774328799c692cbfb1f784fbf3580e65effdc5d2d42f124f62bb3a
SSDEEP

12288:LKLRCoZzl+CN6XYt8GjKtzp422BxYLWM7Wi9h77:LiCoZzkg8tzpH2BK17L9h77

Score

10^/10

formbook igbn discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

igbn

Decoy

daolangfans.com

creatievecontentpeople.com

cargizmos.net

azure1224.xyz

shopahava.com

recursum.com

rumblerain.com

betmonde396.com

webinarcerdaskanindonesia.com

telemaca.com

hellohurt.com

peaceprairie.com

johntheonlinearborist.com

pilotbxprt.store

creatingsobriety.com

getrightspt.com

104456.com

travelsofwray.com

americagroupperu.com

silberscore.net

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2188-16-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2188-21-0x0000000000400000-0x000000000042F000-memory.dmp	formbook

Executes dropped EXE 1 IoCs

pid	Process
2188	AddInProcess32.exe

Loads dropped DLL 1 IoCs

pid	Process
2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2572 set thread context of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2188 set thread context of 1200	2188	AddInProcess32.exe	21

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2832	2804	WerFault.exe	32

System Location Discovery: System Language Discovery 1 TTPs 2 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	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
2188	AddInProcess32.exe
2188	AddInProcess32.exe

Suspicious behavior: MapViewOfSection 3 IoCs

pid	Process
2188	AddInProcess32.exe
2188	AddInProcess32.exe
2188	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
Token: SeDebugPrivilege	2188	AddInProcess32.exe
Token: SeShutdownPrivilege	1200	Explorer.EXE
Token: SeShutdownPrivilege	1200	Explorer.EXE
Token: SeShutdownPrivilege	1200	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 2572 wrote to memory of 2188	2572	acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe	31
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 1200 wrote to memory of 2804	1200	Explorer.EXE	32
PID 2804 wrote to memory of 2832	2804	msiexec.exe	33
PID 2804 wrote to memory of 2832	2804	msiexec.exe	33
PID 2804 wrote to memory of 2832	2804	msiexec.exe	33
PID 2804 wrote to memory of 2832	2804	msiexec.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe
  "C:\Users\Admin\AppData\Local\Temp\acb23b92beb1de31d7175c94f94854887bc0b2adb90faddc89bf1b14b1bd1a4b.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2572
- - C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
    "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2188
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2804 -s 268
    3⤵
    - Program crash
    PID:2832

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

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Downloads

\Users\Admin\AppData\Local\Temp\AddInProcess32.exe

Filesize
41KB

MD5
6a673bfc3b67ae9782cb31af2f234c68

SHA1
7544e89566d91e84e3cd437b9a073e5f6b56566e

SHA256
978a4093058aa2ebf05dc353897d90d950324389879b57741b64160825b5ec0e

SHA512
72c302372ce87ceda2a3c70a6005d3f9c112f1641bc7fe6824c718971233e66c07e2996d2785fa358566c38714c25ea812c05c7cfd2f588284849d495fd24f39

Download Submit
memory/1200-30-0x0000000004E40000-0x0000000004F22000-memory.dmp

Filesize
904KB

Download
memory/1200-23-0x0000000004E40000-0x0000000004F22000-memory.dmp

Filesize
904KB

Download
memory/2188-21-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2188-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2188-22-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2188-19-0x00000000009C0000-0x0000000000CC3000-memory.dmp

Filesize
3.0MB

Download
memory/2188-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2188-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2188-11-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2572-18-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-3-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-5-0x0000000002040000-0x000000000205A000-memory.dmp

Filesize
104KB

Download
memory/2572-7-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/2572-6-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/2572-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2572-2-0x00000000004D0000-0x0000000000500000-memory.dmp

Filesize
192KB

Download
memory/2572-1-0x0000000000890000-0x000000000099E000-memory.dmp

Filesize
1.1MB

Download
memory/2804-25-0x0000000000F40000-0x0000000000F54000-memory.dmp

Filesize
80KB

Download
memory/2804-24-0x0000000000F40000-0x0000000000F54000-memory.dmp

Filesize
80KB

Download
memory/2804-27-0x0000000000F40000-0x0000000000F54000-memory.dmp

Filesize
80KB

Download

Analysis

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