formbook | 7048b334e9ac29b1431dd49e82298bb4b7f965d1b9d934af7de489c5054c248f

General

Target

AT0001-Purchase order.exe
Size

316KB
MD5

a98ae50f4a149db303f4e345c900c9f1
SHA1

5fbda81750c932bf64d2a57d773867679953bc90
SHA256

d93009185b1d089f922fbfc67ab4097a178f63b5f18f538a88b24a869ab70c12
SHA512

45aa93cc3031e44b5d2478d918b6004932a3bbd51b9930cc47124aa67f3e0a1a1a830d170e0f959cf63423cb99b66eba2e3188047a579d2cd155dc96c103dbf6
SSDEEP

6144:kNeZOWWFI0Dp6DHuZlsljfVaR9gnrBfp3lT:kN5WWFI0SHzlj3nr9pVT

Score

10^/10

formbook gd08 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gd08

Decoy

discover-tiktok.com

vgyvgycc.com

mrsg.xyz

alredwan.net

d1guoji.com

0519bjw.com

robinhoodplu.com

thechickscincinnati.com

efq2ci2.cfd

vgas4.xyz

s3y4b19.cfd

desertcaviar.com

capricho.xyz

flaujae.com

lensmaintenance3.com

1kjia39.cfd

tqn6.com

needammuntionnotaride.com

2681h.com

braincloudstudios.net

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/836-17-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/836-19-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2776-26-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
808	xhxsojqn.exe
836	xhxsojqn.exe

Loads dropped DLL 3 IoCs

pid	Process
2288	AT0001-Purchase order.exe
2288	AT0001-Purchase order.exe
808	xhxsojqn.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 808 set thread context of 836	808	xhxsojqn.exe	29
PID 836 set thread context of 1192	836	xhxsojqn.exe	21
PID 2776 set thread context of 1192	2776	NETSTAT.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	AT0001-Purchase order.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xhxsojqn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NETSTAT.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
2776	NETSTAT.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
836	xhxsojqn.exe
836	xhxsojqn.exe
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE
2776	NETSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
836	xhxsojqn.exe
836	xhxsojqn.exe
836	xhxsojqn.exe
2776	NETSTAT.EXE
2776	NETSTAT.EXE

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	xhxsojqn.exe
Token: SeDebugPrivilege	2776	NETSTAT.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2288 wrote to memory of 808	2288	AT0001-Purchase order.exe	28
PID 2288 wrote to memory of 808	2288	AT0001-Purchase order.exe	28
PID 2288 wrote to memory of 808	2288	AT0001-Purchase order.exe	28
PID 2288 wrote to memory of 808	2288	AT0001-Purchase order.exe	28
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 808 wrote to memory of 836	808	xhxsojqn.exe	29
PID 1192 wrote to memory of 2776	1192	Explorer.EXE	30
PID 1192 wrote to memory of 2776	1192	Explorer.EXE	30
PID 1192 wrote to memory of 2776	1192	Explorer.EXE	30
PID 1192 wrote to memory of 2776	1192	Explorer.EXE	30
PID 2776 wrote to memory of 2292	2776	NETSTAT.EXE	31
PID 2776 wrote to memory of 2292	2776	NETSTAT.EXE	31
PID 2776 wrote to memory of 2292	2776	NETSTAT.EXE	31
PID 2776 wrote to memory of 2292	2776	NETSTAT.EXE	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\AT0001-Purchase order.exe
  "C:\Users\Admin\AppData\Local\Temp\AT0001-Purchase order.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe
    C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe C:\Users\Admin\AppData\Local\Temp\lrtvm
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:808
  - - C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe
      C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe C:\Users\Admin\AppData\Local\Temp\lrtvm
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:836
- 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:2776
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\fn2rh4b8n9ntpdlwnu

Filesize
210KB

MD5
a54aa4b50f7094b132058491a76ebfa8

SHA1
10443981f6085918b774825a7e865be88ea45d6a

SHA256
93b2893199ee2f6b28e761bfd621d612bb438b95f652bc995490f73094dcb7d5

SHA512
64c1286730796087f1656af8b365b57fd3cba6d7b9fdda45002c92413b0d0cd40322e2da6717001f5a74d03a35124f85d0f87104f793396a717a24fb8835a3bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\lrtvm

Filesize
4KB

MD5
eab172f7c2a6cd4dda552caf2d97b71d

SHA1
d2c997bc8f5ee13e6e4efc87f5214ae0259b021f

SHA256
724703b34be8f256a1fbe8734619063dd0d3bf3c05e444f47d29691bd941d84e

SHA512
5975d239634bf8cb95c3a6d6f629e90d17bd98670551dbbdb823aa06083340a514ce79de86e12306a3ef3092965350cd5240250756091a98016a1aabc8c77fb1

Download Submit
C:\Users\Admin\AppData\Local\Temp\xhxsojqn.exe

Filesize
4KB

MD5
cfb2774909a615a38d13977af09c6885

SHA1
53f7c365ec213d93da2d73250d706afd824c76d5

SHA256
8506e5d45c6f8e51e89c0e8e188f4bb0b5c3eb1c98a0d3dc7085087156382508

SHA512
da94a4ea2d0dcb75e45f9d7a36f413607ed521946539b6178840893c7ff066a259a8e5ed137ab4513473499776f251695f0180d7d9cb1656ba4f57c921e22b9d

Download Submit
memory/808-14-0x0000000000250000-0x0000000000252000-memory.dmp

Filesize
8KB

Download
memory/836-17-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/836-19-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1192-20-0x0000000002EB0000-0x0000000002FB0000-memory.dmp

Filesize
1024KB

Download
memory/1192-21-0x0000000004D40000-0x0000000004EB9000-memory.dmp

Filesize
1.5MB

Download
memory/1192-27-0x0000000004D40000-0x0000000004EB9000-memory.dmp

Filesize
1.5MB

Download
memory/2776-24-0x00000000007B0000-0x00000000007B9000-memory.dmp

Filesize
36KB

Download
memory/2776-25-0x00000000007B0000-0x00000000007B9000-memory.dmp

Filesize
36KB

Download
memory/2776-26-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

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