formbook | 4ad4f511c43369e73655e833bac1c22c63c5e9fd56245990266b2d03c54a0fc2

General

Target

Enquiry Letter 2021_39 PDF .exe
Size

706KB
MD5

ebf459ab9f9e3280e01aa2afc78235cb
SHA1

b78ba9874e119e3be2521471f0e9bdc6b22d0452
SHA256

8357119ef28bc4518732db5fea2e1aae12a779c36c3beb0a732a224f460abddb
SHA512

0831473ccb3bf1314199dd1085075967c8867a1261ec7fe03f5c3da58b2a7dd3158b41b1fa5d2496e722bea04fb0230e306baccbc4459523b21698ee0d2a8094

Score

10^/10

formbook k2w rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

k2w

Decoy

brittanybeck.com

idapple.mobi

sharoncement.win

smerchenko.com

citizenssenergygroup.com

landhawktactical.com

yilingshenghuo.com

lifa97.com

8160pe.com

sf-purify.com

bloomingamaizing.com

thymeshares.com

rainwatercollectionhq.com

jaseba.net

whoistom.net

gn70.com

payperclickad.info

jessicagorbet.com

portlockproperty.com

mindset-beratung.com

Signatures

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

Formbook Payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1808-138-0x0000000000DC0000-0x0000000000DEA000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Enquiry Letter 2021_39 PDF .exeEnquiry Letter 2021_39 PDF .exeipconfig.exe

description	pid	process	target process
PID 2716 set thread context of 876	2716	Enquiry Letter 2021_39 PDF .exe	Enquiry Letter 2021_39 PDF .exe
PID 876 set thread context of 3116	876	Enquiry Letter 2021_39 PDF .exe	Explorer.EXE
PID 1808 set thread context of 3116	1808	ipconfig.exe	Explorer.EXE

Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

1808 ipconfig.exe

pid	process
1808	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

Enquiry Letter 2021_39 PDF .exeEnquiry Letter 2021_39 PDF .exeipconfig.exe

pid	process
2716	Enquiry Letter 2021_39 PDF .exe
2716	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe
1808	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3116 Explorer.EXE

pid	process
3116	Explorer.EXE

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Enquiry Letter 2021_39 PDF .exeEnquiry Letter 2021_39 PDF .exeipconfig.exe

pid	process
2716	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
876	Enquiry Letter 2021_39 PDF .exe
1808	ipconfig.exe
1808	ipconfig.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Enquiry Letter 2021_39 PDF .exeipconfig.exe

description pid process

Token: SeDebugPrivilege 876 Enquiry Letter 2021_39 PDF .exe
Token: SeDebugPrivilege 1808 ipconfig.exe

description	pid	process
Token: SeDebugPrivilege	876	Enquiry Letter 2021_39 PDF .exe
Token: SeDebugPrivilege	1808	ipconfig.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Enquiry Letter 2021_39 PDF .exeExplorer.EXEipconfig.exe

description	pid	process	target process
PID 2716 wrote to memory of 876	2716	Enquiry Letter 2021_39 PDF .exe	Enquiry Letter 2021_39 PDF .exe
PID 2716 wrote to memory of 876	2716	Enquiry Letter 2021_39 PDF .exe	Enquiry Letter 2021_39 PDF .exe
PID 2716 wrote to memory of 876	2716	Enquiry Letter 2021_39 PDF .exe	Enquiry Letter 2021_39 PDF .exe
PID 3116 wrote to memory of 1808	3116	Explorer.EXE	ipconfig.exe
PID 3116 wrote to memory of 1808	3116	Explorer.EXE	ipconfig.exe
PID 3116 wrote to memory of 1808	3116	Explorer.EXE	ipconfig.exe
PID 1808 wrote to memory of 1912	1808	ipconfig.exe	cmd.exe
PID 1808 wrote to memory of 1912	1808	ipconfig.exe	cmd.exe
PID 1808 wrote to memory of 1912	1808	ipconfig.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3116

C:\Users\Admin\AppData\Local\Temp\Enquiry Letter 2021_39 PDF .exe
"C:\Users\Admin\AppData\Local\Temp\Enquiry Letter 2021_39 PDF .exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2716

C:\Users\Admin\AppData\Local\Temp\Enquiry Letter 2021_39 PDF .exe
"C:\Users\Admin\AppData\Local\Temp\Enquiry Letter 2021_39 PDF .exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:876

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.exe"
2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Enquiry Letter 2021_39 PDF .exe"
3⤵
PID:1912

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/876-130-0x0000000000000000-mapping.dmp

Download
memory/876-132-0x0000000000A20000-0x0000000000D6A000-memory.dmp

Filesize
3.3MB

Download
memory/876-133-0x00000000009D0000-0x00000000009E4000-memory.dmp

Filesize
80KB

Download
memory/1808-135-0x0000000000000000-mapping.dmp

Download
memory/1808-137-0x0000000000750000-0x000000000075B000-memory.dmp

Filesize
44KB

Download
memory/1808-138-0x0000000000DC0000-0x0000000000DEA000-memory.dmp

Filesize
168KB

Download
memory/1808-139-0x00000000018A0000-0x0000000001BEA000-memory.dmp

Filesize
3.3MB

Download
memory/1808-140-0x00000000016A0000-0x0000000001733000-memory.dmp

Filesize
588KB

Download
memory/1912-136-0x0000000000000000-mapping.dmp

Download
memory/2716-131-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/3116-134-0x00000000028C0000-0x0000000002A2E000-memory.dmp

Filesize
1.4MB

Download
memory/3116-141-0x0000000008210000-0x0000000008338000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads