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/1540-129-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/1540-130-0x000000000041ED60-mapping.dmp	formbook
behavioral2/memory/2064-136-0x0000000000630000-0x000000000065E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Documents pdf.exeDocuments pdf.execmmon32.exe

description	pid	process	target process
PID 628 set thread context of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 1540 set thread context of 2996	1540	Documents pdf.exe	Explorer.EXE
PID 2064 set thread context of 2996	2064	cmmon32.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

2960 schtasks.exe

pid	process
2960	schtasks.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

Documents pdf.execmmon32.exe

pid	process
1540	Documents pdf.exe
1540	Documents pdf.exe
1540	Documents pdf.exe
1540	Documents pdf.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe
2064	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2996 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Documents pdf.execmmon32.exe

pid process

1540 Documents pdf.exe
1540 Documents pdf.exe
1540 Documents pdf.exe
2064 cmmon32.exe
2064 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Documents pdf.execmmon32.exe

description pid process

Token: SeDebugPrivilege 1540 Documents pdf.exe
Token: SeDebugPrivilege 2064 cmmon32.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

2996 Explorer.EXE

pid	process
2996	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1540	Documents pdf.exe
Token: SeDebugPrivilege	2064	cmmon32.exe

pid	process
2996	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Documents pdf.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 628 wrote to memory of 2960	628	Documents pdf.exe	schtasks.exe
PID 628 wrote to memory of 2960	628	Documents pdf.exe	schtasks.exe
PID 628 wrote to memory of 2960	628	Documents pdf.exe	schtasks.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 628 wrote to memory of 1540	628	Documents pdf.exe	Documents pdf.exe
PID 2996 wrote to memory of 2064	2996	Explorer.EXE	cmmon32.exe
PID 2996 wrote to memory of 2064	2996	Explorer.EXE	cmmon32.exe
PID 2996 wrote to memory of 2064	2996	Explorer.EXE	cmmon32.exe
PID 2064 wrote to memory of 3688	2064	cmmon32.exe	cmd.exe
PID 2064 wrote to memory of 3688	2064	cmmon32.exe	cmd.exe
PID 2064 wrote to memory of 3688	2064	cmmon32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2996

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:628

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PwTRIU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3A99.tmp"
3⤵
- Creates scheduled task(s)
PID:2960

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:1540

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2064

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Documents pdf.exe"
3⤵
PID:3688

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\tmp3A99.tmp
MD5
892d199bb47b34d23f86eda3f47d83d1

SHA1
46101a313e64d34d511d201e1a75c5f063ffcd07

SHA256
1f095a66a580a135e5a182735b3912fc69a81897ca95ce60a0b81c43bdd97286

SHA512
5a0c7ec2832d81a96f96c5bfcb9d5e8a915c3a850b756c7246819f7b891c8dfa9a67f031bc0839bc956406938c10389345640b257be2569b8a54cc8373e72e36

Download Submit
memory/628-125-0x00000000050A0000-0x000000000512A000-memory.dmp

Filesize
552KB

Download
memory/628-120-0x0000000004B40000-0x0000000004B41000-memory.dmp

Filesize
4KB

Download
memory/628-126-0x0000000005010000-0x000000000504A000-memory.dmp

Filesize
232KB

Download
memory/628-116-0x0000000004950000-0x00000000049B7000-memory.dmp

Filesize
412KB

Download
memory/628-114-0x0000000000150000-0x0000000000151000-memory.dmp

Filesize
4KB

Download
memory/628-121-0x000000000E2C0000-0x000000000E2C1000-memory.dmp

Filesize
4KB

Download
memory/628-122-0x0000000004B80000-0x0000000004B82000-memory.dmp

Filesize
8KB

Download
memory/628-123-0x0000000004B73000-0x0000000004B75000-memory.dmp

Filesize
8KB

Download
memory/628-124-0x0000000004C30000-0x0000000004C31000-memory.dmp

Filesize
4KB

Download
memory/628-119-0x0000000004B70000-0x0000000004B71000-memory.dmp

Filesize
4KB

Download
memory/628-118-0x0000000009F00000-0x0000000009F01000-memory.dmp

Filesize
4KB

Download
memory/628-117-0x000000000A400000-0x000000000A401000-memory.dmp

Filesize
4KB

Download
memory/1540-129-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1540-130-0x000000000041ED60-mapping.dmp

Download
memory/1540-132-0x00000000014F0000-0x0000000001504000-memory.dmp

Filesize
80KB

Download
memory/1540-131-0x0000000001520000-0x0000000001840000-memory.dmp

Filesize
3.1MB

Download
memory/2064-138-0x00000000045E0000-0x0000000004900000-memory.dmp

Filesize
3.1MB

Download
memory/2064-139-0x0000000004440000-0x00000000044D3000-memory.dmp

Filesize
588KB

Download
memory/2064-134-0x0000000000000000-mapping.dmp

Download
memory/2064-136-0x0000000000630000-0x000000000065E000-memory.dmp

Filesize
184KB

Download
memory/2064-135-0x0000000000E90000-0x0000000000E9C000-memory.dmp

Filesize
48KB

Download
memory/2960-127-0x0000000000000000-mapping.dmp

Download
memory/2996-133-0x0000000007080000-0x0000000007151000-memory.dmp

Filesize
836KB

Download
memory/2996-140-0x0000000009130000-0x0000000009299000-memory.dmp

Filesize
1.4MB

Download
memory/3688-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads