formbook | ec427d5a521cdc4f2690ac7ffa883c982c4e3008991127998b0cfdf32f240f30

General

Target

010013.exe
Size

587KB
MD5

b670879d45e75eb7f88fe047f9e88e5f
SHA1

7497d669a327aebf33ec9dd1c554444d4ee826cf
SHA256

ec427d5a521cdc4f2690ac7ffa883c982c4e3008991127998b0cfdf32f240f30
SHA512

b3f60dc3e35babbce28cbbdb21e067dbdfa41b05ccfb35693bc4c84db90fe32551701924ede85517cd5676cca999a16d3bffc71175a97b1ea74ad41cfcc45839

Score

10^/10

formbook o4ms rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

o4ms

C2

http://www.nocodehost.com/o4ms/

Decoy

fishingboatpub.com

trebor72.com

qualitycleanaustralia.com

amphilykenyx.com

jayte90.net

alveegrace.com

le-fleursoleil.com

volumoffer.com

businessbookwriters.com

alpin-art.com

firsttastetogo.com

catofc.com

ref-290.com

sbo2008.com

fortlauderdaleelevators.com

shanghaiyalian.com

majestybags.com

afcerd.com

myceliated.com

ls0a.com

Signatures

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

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2852-125-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2852-126-0x000000000041EAB0-mapping.dmp	formbook
behavioral2/memory/616-134-0x00000000005B0000-0x00000000005DE000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

010013.exe010013.exeraserver.exe

description	pid	process	target process
PID 1684 set thread context of 2852	1684	010013.exe	010013.exe
PID 2852 set thread context of 3028	2852	010013.exe	Explorer.EXE
PID 616 set thread context of 3028	616	raserver.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

1380 schtasks.exe

pid	process
1380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

010013.exeraserver.exe

pid	process
2852	010013.exe
2852	010013.exe
2852	010013.exe
2852	010013.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe
616	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3028 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

010013.exeraserver.exe

pid process

2852 010013.exe
2852 010013.exe
2852 010013.exe
616 raserver.exe
616 raserver.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

010013.exeraserver.exe

description pid process

Token: SeDebugPrivilege 2852 010013.exe
Token: SeDebugPrivilege 616 raserver.exe

pid	process
3028	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2852	010013.exe
Token: SeDebugPrivilege	616	raserver.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

010013.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 1684 wrote to memory of 1380	1684	010013.exe	schtasks.exe
PID 1684 wrote to memory of 1380	1684	010013.exe	schtasks.exe
PID 1684 wrote to memory of 1380	1684	010013.exe	schtasks.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 1684 wrote to memory of 2852	1684	010013.exe	010013.exe
PID 3028 wrote to memory of 616	3028	Explorer.EXE	raserver.exe
PID 3028 wrote to memory of 616	3028	Explorer.EXE	raserver.exe
PID 3028 wrote to memory of 616	3028	Explorer.EXE	raserver.exe
PID 616 wrote to memory of 1196	616	raserver.exe	cmd.exe
PID 616 wrote to memory of 1196	616	raserver.exe	cmd.exe
PID 616 wrote to memory of 1196	616	raserver.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3028

C:\Users\Admin\AppData\Local\Temp\010013.exe
"C:\Users\Admin\AppData\Local\Temp\010013.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1684

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ELqDlkdxF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3BBD.tmp"
3⤵
- Creates scheduled task(s)
PID:1380

C:\Users\Admin\AppData\Local\Temp\010013.exe
"C:\Users\Admin\AppData\Local\Temp\010013.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2852

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:616

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\010013.exe"
3⤵
PID:1196

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

memory/616-136-0x00000000041A0000-0x0000000004233000-memory.dmp

Filesize
588KB

Download
memory/616-133-0x0000000000BB0000-0x0000000000BCF000-memory.dmp

Filesize
124KB

Download
memory/616-135-0x0000000004310000-0x0000000004630000-memory.dmp

Filesize
3.1MB

Download
memory/616-134-0x00000000005B0000-0x00000000005DE000-memory.dmp

Filesize
184KB

Download
memory/616-131-0x0000000000000000-mapping.dmp

Download
memory/1196-132-0x0000000000000000-mapping.dmp

Download
memory/1380-124-0x0000000000000000-mapping.dmp

Download
memory/1684-121-0x00000000054E0000-0x00000000054E5000-memory.dmp

Filesize
20KB

Download
memory/1684-119-0x00000000051B0000-0x00000000056AE000-memory.dmp

Filesize
5.0MB

Download
memory/1684-117-0x00000000056B0000-0x00000000056B1000-memory.dmp

Filesize
4KB

Download
memory/1684-118-0x0000000005250000-0x0000000005251000-memory.dmp

Filesize
4KB

Download
memory/1684-123-0x0000000007B10000-0x0000000007B82000-memory.dmp

Filesize
456KB

Download
memory/1684-120-0x00000000051D0000-0x00000000051D1000-memory.dmp

Filesize
4KB

Download
memory/1684-115-0x0000000000900000-0x0000000000901000-memory.dmp

Filesize
4KB

Download
memory/1684-122-0x0000000007970000-0x0000000007971000-memory.dmp

Filesize
4KB

Download
memory/2852-128-0x00000000012F0000-0x0000000001610000-memory.dmp

Filesize
3.1MB

Download
memory/2852-129-0x0000000001010000-0x0000000001024000-memory.dmp

Filesize
80KB

Download
memory/2852-126-0x000000000041EAB0-mapping.dmp

Download
memory/2852-125-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3028-130-0x0000000001050000-0x0000000001113000-memory.dmp

Filesize
780KB

Download
memory/3028-137-0x0000000002F70000-0x000000000304B000-memory.dmp

Filesize
876KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads