formbook | 90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68

General

Target

Documents pdf.exe
Size

533KB
MD5

027d8e07155bc564f7b522183018efe6
SHA1

10348a89cc88e0911f507a2d4aa50071718b096c
SHA256

90e7c97ea4917a6efb5c0a69bd6f481b1a5023d6f8ad0f22d123c417edff8a68
SHA512

5d1c8f6f0121df79767de6de22e7f513972aceeafd7376086511c8575187e224190a408340ec57835e9c0e0a347d47d7e4fd70c8618f91cf638c23b3acc5c3d3

Score

10^/10

formbook rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.valiantfinancial.net/hth0/

Decoy

grahamandjana.com

surfpodcastnetwork.com

valkyrie20.com

hire4looks.com

wewalkfastasone.com

saveourschoolyear.com

5g23e.com

abusinesssystems.com

telefonepantalla.com

tailorscafe.com

schwarzer-markt.net

stopwatch247.com

458grandbetting.com

xpovision.com

kutkingbarbering.life

kppp-guxxz.xyz

chuckwagon-chow.com

la-casa-delle-vita.com

creativesocials.com

negociacoeshojebr.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2148-129-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2148-130-0x000000000041ED60-mapping.dmp	formbook
behavioral2/memory/3216-137-0x0000000000C30000-0x0000000000C5E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Documents pdf.exeDocuments pdf.exeexplorer.exe

description	pid	process	target process
PID 2116 set thread context of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2148 set thread context of 3020	2148	Documents pdf.exe	Explorer.EXE
PID 3216 set thread context of 3020	3216	explorer.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

3456 schtasks.exe

pid	process
3456	schtasks.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

Processes:

Documents pdf.exeexplorer.exe

pid	process
2148	Documents pdf.exe
2148	Documents pdf.exe
2148	Documents pdf.exe
2148	Documents pdf.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe
3216	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3020 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Documents pdf.exeexplorer.exe

pid process

2148 Documents pdf.exe
2148 Documents pdf.exe
2148 Documents pdf.exe
3216 explorer.exe
3216 explorer.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Documents pdf.exeexplorer.exe

description pid process

Token: SeDebugPrivilege 2148 Documents pdf.exe
Token: SeDebugPrivilege 3216 explorer.exe

pid	process
3020	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2148	Documents pdf.exe
Token: SeDebugPrivilege	3216	explorer.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Documents pdf.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 2116 wrote to memory of 3456	2116	Documents pdf.exe	schtasks.exe
PID 2116 wrote to memory of 3456	2116	Documents pdf.exe	schtasks.exe
PID 2116 wrote to memory of 3456	2116	Documents pdf.exe	schtasks.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 2116 wrote to memory of 2148	2116	Documents pdf.exe	Documents pdf.exe
PID 3020 wrote to memory of 3216	3020	Explorer.EXE	explorer.exe
PID 3020 wrote to memory of 3216	3020	Explorer.EXE	explorer.exe
PID 3020 wrote to memory of 3216	3020	Explorer.EXE	explorer.exe
PID 3216 wrote to memory of 644	3216	explorer.exe	cmd.exe
PID 3216 wrote to memory of 644	3216	explorer.exe	cmd.exe
PID 3216 wrote to memory of 644	3216	explorer.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3020

C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2116

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PwTRIU" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDEAD.tmp"
3⤵
- Creates scheduled task(s)
PID:3456

C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2148

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3216

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe"
3⤵
PID:644

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDEAD.tmp
MD5
aaa5360ab8a4ab5e7146831fece6dae0

SHA1
06c876063886c62ab7b13e8667b08f05f1e4d70c

SHA256
10359765d76af441571eb362670db684dde9c5f0a4c274b9e5ddba23e4172133

SHA512
225fd5b640addc4375ad3975d96110587374f22ff882473608b39b2393f9a20676406d330453d7d24c8a41e2450386b5c2dbdb5873616a2e6e83fa95d3e1e297

Download Submit
memory/644-135-0x0000000000000000-mapping.dmp

Download
memory/2116-119-0x00000000030A0000-0x00000000030A1000-memory.dmp

Filesize
4KB

Download
memory/2116-124-0x00000000058E3000-0x00000000058E5000-memory.dmp

Filesize
8KB

Download
memory/2116-114-0x0000000000D10000-0x0000000000D11000-memory.dmp

Filesize
4KB

Download
memory/2116-120-0x00000000058E0000-0x00000000058E1000-memory.dmp

Filesize
4KB

Download
memory/2116-121-0x000000000ECB0000-0x000000000ECB1000-memory.dmp

Filesize
4KB

Download
memory/2116-122-0x00000000058F0000-0x00000000058F2000-memory.dmp

Filesize
8KB

Download
memory/2116-123-0x00000000059A0000-0x00000000059A1000-memory.dmp

Filesize
4KB

Download
memory/2116-118-0x000000000AB40000-0x000000000AB41000-memory.dmp

Filesize
4KB

Download
memory/2116-125-0x0000000005EB0000-0x0000000005F3A000-memory.dmp

Filesize
552KB

Download
memory/2116-126-0x0000000005580000-0x00000000055BA000-memory.dmp

Filesize
232KB

Download
memory/2116-117-0x000000000B040000-0x000000000B041000-memory.dmp

Filesize
4KB

Download
memory/2116-116-0x0000000005640000-0x00000000056A7000-memory.dmp

Filesize
412KB

Download
memory/2148-129-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2148-130-0x000000000041ED60-mapping.dmp

Download
memory/2148-132-0x00000000010C0000-0x000000000120A000-memory.dmp

Filesize
1.3MB

Download
memory/2148-131-0x0000000001690000-0x00000000019B0000-memory.dmp

Filesize
3.1MB

Download
memory/3020-133-0x0000000007170000-0x0000000007307000-memory.dmp

Filesize
1.6MB

Download
memory/3020-140-0x0000000007310000-0x0000000007474000-memory.dmp

Filesize
1.4MB

Download
memory/3216-134-0x0000000000000000-mapping.dmp

Download
memory/3216-137-0x0000000000C30000-0x0000000000C5E000-memory.dmp

Filesize
184KB

Download
memory/3216-136-0x0000000000DA0000-0x00000000011DF000-memory.dmp

Filesize
4.2MB

Download
memory/3216-138-0x0000000005250000-0x0000000005570000-memory.dmp

Filesize
3.1MB

Download
memory/3216-139-0x0000000005150000-0x00000000051E3000-memory.dmp

Filesize
588KB

Download
memory/3456-127-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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