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 2 IoCs

rat

resource	yara_rule
behavioral2/memory/4376-17-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/4376-22-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation	Inquiry pdf.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3164 set thread context of 4376	3164	Inquiry pdf.exe	100
PID 4376 set thread context of 3516	4376	Inquiry pdf.exe	56
PID 4716 set thread context of 3516	4716	cmmon32.exe	56

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	Inquiry pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
4508	schtasks.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
3164	Inquiry pdf.exe
4376	Inquiry pdf.exe
4376	Inquiry pdf.exe
4376	Inquiry pdf.exe
4376	Inquiry pdf.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe
4716	cmmon32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
4376	Inquiry pdf.exe
4376	Inquiry pdf.exe
4376	Inquiry pdf.exe
4716	cmmon32.exe
4716	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3164	Inquiry pdf.exe
Token: SeDebugPrivilege	4376	Inquiry pdf.exe
Token: SeDebugPrivilege	4716	cmmon32.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3516	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3164 wrote to memory of 4508	3164	Inquiry pdf.exe	98
PID 3164 wrote to memory of 4508	3164	Inquiry pdf.exe	98
PID 3164 wrote to memory of 4508	3164	Inquiry pdf.exe	98
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3164 wrote to memory of 4376	3164	Inquiry pdf.exe	100
PID 3516 wrote to memory of 4716	3516	Explorer.EXE	101
PID 3516 wrote to memory of 4716	3516	Explorer.EXE	101
PID 3516 wrote to memory of 4716	3516	Explorer.EXE	101
PID 4716 wrote to memory of 2976	4716	cmmon32.exe	103
PID 4716 wrote to memory of 2976	4716	cmmon32.exe	103
PID 4716 wrote to memory of 2976	4716	cmmon32.exe	103

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3516
- C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
  2⤵
  - Checks computer location settings
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UpCsvUUWV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5FAF.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4508
- - 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:4376
- C:\Windows\SysWOW64\cmmon32.exe
  "C:\Windows\SysWOW64\cmmon32.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:4716
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Inquiry pdf.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2976

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

Query Registry

1

T1012

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\tmp5FAF.tmp

Filesize
1KB

MD5
9ae81ad8208cadaf5e7c6334f69ce81e

SHA1
d87c378c7ddad0ebfa44666d2b9d6b285fb98ffe

SHA256
bbdc25877f44347467ed0546918fa2dbe2bde6554cdf7de9c225c19cb3a8c9f6

SHA512
72fa0522cadb4d5365c60098ef10b1f1d46db79c59f4d42fd146687a1b1ce4e950e9cfadad5784798f1b1442074b9a09b02f3444a510ba06505fd174c4ce0221

Download Submit
memory/3164-6-0x00000000051A0000-0x00000000051F6000-memory.dmp

Filesize
344KB

Download
memory/3164-19-0x0000000074480000-0x0000000074C30000-memory.dmp

Filesize
7.7MB

Download
memory/3164-3-0x0000000005500000-0x0000000005AA4000-memory.dmp

Filesize
5.6MB

Download
memory/3164-4-0x0000000004FF0000-0x0000000005082000-memory.dmp

Filesize
584KB

Download
memory/3164-5-0x0000000004F60000-0x0000000004F6A000-memory.dmp

Filesize
40KB

Download
memory/3164-0-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/3164-7-0x0000000074480000-0x0000000074C30000-memory.dmp

Filesize
7.7MB

Download
memory/3164-8-0x00000000052A0000-0x00000000052AA000-memory.dmp

Filesize
40KB

Download
memory/3164-9-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/3164-10-0x0000000074480000-0x0000000074C30000-memory.dmp

Filesize
7.7MB

Download
memory/3164-11-0x0000000000E30000-0x0000000000E92000-memory.dmp

Filesize
392KB

Download
memory/3164-2-0x0000000004EB0000-0x0000000004F4C000-memory.dmp

Filesize
624KB

Download
memory/3164-1-0x0000000000440000-0x00000000004C8000-memory.dmp

Filesize
544KB

Download
memory/3516-31-0x0000000004170000-0x0000000004274000-memory.dmp

Filesize
1.0MB

Download
memory/3516-24-0x0000000002840000-0x000000000293B000-memory.dmp

Filesize
1004KB

Download
memory/3516-27-0x0000000002840000-0x000000000293B000-memory.dmp

Filesize
1004KB

Download
memory/3516-32-0x0000000004170000-0x0000000004274000-memory.dmp

Filesize
1.0MB

Download
memory/3516-34-0x0000000004170000-0x0000000004274000-memory.dmp

Filesize
1.0MB

Download
memory/4376-17-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4376-22-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/4376-23-0x0000000001350000-0x0000000001364000-memory.dmp

Filesize
80KB

Download
memory/4376-20-0x0000000000EE0000-0x000000000122A000-memory.dmp

Filesize
3.3MB

Download
memory/4716-25-0x0000000000200000-0x000000000020C000-memory.dmp

Filesize
48KB

Download
memory/4716-26-0x0000000000200000-0x000000000020C000-memory.dmp

Filesize
48KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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