formbook | aaadb8e27ffc99333e3d23e527051d6dd9acf3df1231463f4e25860edcc13bfb

General

Target

Inquiry pdf.exe
Size

517KB
MD5

cb03eb5391971119bf6f81acbb84e1bc
SHA1

b5f050d050f9af0b4d937514935854c4e52f3eb6
SHA256

cddf575d340c695e513d03330965f716f8ddf17f5d2fb0929fbb78875653d8b7
SHA512

d654710622e0781d4119f894a9ab6677a72b20ef2c4d3784aeaf4dcd34b47e2861008be15d3a8d474b8b6b82b395a337f14b05ec470433fd8d8d694315b6d8b1
SSDEEP

6144:HBzy0/iei9k8mOalFu027X1mKjlpBFR+HPdroDJ8t3T7UmhCCT3dIPSH6MKghy03:PZi9704x/mHJoyx7Lhr/zDEuua+/o

Score

10^/10

formbook bft discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

bft

Decoy

edenicities.com

buntingfordhomeservices.com

nuanceproducoes.com

divasinspire.com

capiturn.com

zbjsn.com

thegioicaytrongnha.com

featherventure.com

onbrandtrading.com

sanguoban.com

doorman.pro

ourhomie.net

iwassickonholiday.com

mrcskin.com

reallycoolmask.com

tkrbeautyinstitut.com

keytomiami.com

sesliduybeni.com

asherwebber.com

starkweatherwindows.net

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/1076-19-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1076-23-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1076-28-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2312	cmd.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 1076	2604	Inquiry pdf.exe	33
PID 1076 set thread context of 1192	1076	Inquiry pdf.exe	21
PID 1076 set thread context of 1192	1076	Inquiry pdf.exe	21
PID 2924 set thread context of 1192	2924	msiexec.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msiexec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Inquiry pdf.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2984	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2604	Inquiry pdf.exe
2604	Inquiry pdf.exe
1076	Inquiry pdf.exe
1076	Inquiry pdf.exe
1076	Inquiry pdf.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe
2924	msiexec.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1076	Inquiry pdf.exe
1076	Inquiry pdf.exe
1076	Inquiry pdf.exe
1076	Inquiry pdf.exe
2924	msiexec.exe
2924	msiexec.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2604	Inquiry pdf.exe
Token: SeDebugPrivilege	1076	Inquiry pdf.exe
Token: SeDebugPrivilege	2924	msiexec.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2984	2604	Inquiry pdf.exe	30
PID 2604 wrote to memory of 2984	2604	Inquiry pdf.exe	30
PID 2604 wrote to memory of 2984	2604	Inquiry pdf.exe	30
PID 2604 wrote to memory of 2984	2604	Inquiry pdf.exe	30
PID 2604 wrote to memory of 408	2604	Inquiry pdf.exe	32
PID 2604 wrote to memory of 408	2604	Inquiry pdf.exe	32
PID 2604 wrote to memory of 408	2604	Inquiry pdf.exe	32
PID 2604 wrote to memory of 408	2604	Inquiry pdf.exe	32
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 2604 wrote to memory of 1076	2604	Inquiry pdf.exe	33
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 1192 wrote to memory of 2924	1192	Explorer.EXE	34
PID 2924 wrote to memory of 2312	2924	msiexec.exe	35
PID 2924 wrote to memory of 2312	2924	msiexec.exe	35
PID 2924 wrote to memory of 2312	2924	msiexec.exe	35
PID 2924 wrote to memory of 2312	2924	msiexec.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1192
- C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2604
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UpCsvUUWV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3F80.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2984
- - C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
    3⤵
    PID:408
- - C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1076
- C:\Windows\SysWOW64\msiexec.exe
  "C:\Windows\SysWOW64\msiexec.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:2924
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2312

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3F80.tmp

Filesize
1KB

MD5
375310f3ba7dd0ab500faaf3fa030965

SHA1
a64d83e537aef31cc7e03335cfc9a7cc75315834

SHA256
924461dcb87aae4ef0feef000f9cc1d7cc74d98bbf1b8a0cf3bab8f5a83e87fa

SHA512
6d52d45006ca340c4b36a91c30da190f5caa33ae99d7405d74eac25040eb6abf455a2dffcd17000b4f7d7d77cda347c208fab7a822339cd69522cee2365d42f0

Download Submit
memory/1076-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1076-28-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-29-0x0000000000430000-0x0000000000444000-memory.dmp

Filesize
80KB

Download
memory/1076-21-0x0000000000880000-0x0000000000B83000-memory.dmp

Filesize
3.0MB

Download
memory/1076-23-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-24-0x00000000003A0000-0x00000000003B4000-memory.dmp

Filesize
80KB

Download
memory/1076-14-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-12-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1076-19-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1192-30-0x0000000006400000-0x0000000006545000-memory.dmp

Filesize
1.3MB

Download
memory/1192-31-0x0000000006C50000-0x0000000006DDF000-memory.dmp

Filesize
1.6MB

Download
memory/1192-38-0x0000000003F70000-0x0000000004170000-memory.dmp

Filesize
2.0MB

Download
memory/1192-25-0x0000000004F10000-0x0000000005010000-memory.dmp

Filesize
1024KB

Download
memory/1192-26-0x0000000006400000-0x0000000006545000-memory.dmp

Filesize
1.3MB

Download
memory/1192-36-0x0000000006C50000-0x0000000006DDF000-memory.dmp

Filesize
1.6MB

Download
memory/2604-2-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-3-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/2604-0-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2604-20-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-4-0x0000000074C9E000-0x0000000074C9F000-memory.dmp

Filesize
4KB

Download
memory/2604-1-0x0000000000010000-0x0000000000098000-memory.dmp

Filesize
544KB

Download
memory/2604-5-0x0000000074C90000-0x000000007537E000-memory.dmp

Filesize
6.9MB

Download
memory/2604-6-0x00000000048E0000-0x0000000004942000-memory.dmp

Filesize
392KB

Download
memory/2924-32-0x0000000000730000-0x0000000000744000-memory.dmp

Filesize
80KB

Download
memory/2924-33-0x0000000000730000-0x0000000000744000-memory.dmp

Filesize
80KB

Download
memory/2924-35-0x0000000000730000-0x0000000000744000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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