formbook | daf2171fbf6da5a14b9ac720e3f6a1f75d8d7c1d3e3be02c308ae4faa854eb65

General

Target

09021.exe
Size

592KB
MD5

2536c125edc35ac5061b596308ff8dcd
SHA1

d0506e1bcdb5c8a3714ccb0fa6603173ade0baf7
SHA256

d9cc0ba64d20a3a60f1580c74ff1269f5b545a0abf23362cbc678b12057a6cf3
SHA512

f2e22c98a7a1986178413aa7661707973b6357fe3c2576f12e7b0a4817693f559a0aa6edae364b7c94875058d1e2dc91efeb4d2d05a826a060fa21cf14918521

Score

10^/10

formbook o4ms rat spyware stealer suricata 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
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3648-126-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/3648-127-0x000000000041EAB0-mapping.dmp	formbook
behavioral2/memory/508-135-0x0000000002B60000-0x0000000002B8E000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

Processes:

09021.exe09021.exesvchost.exe

description	pid	process	target process
PID 2532 set thread context of 3648	2532	09021.exe	09021.exe
PID 3648 set thread context of 392	3648	09021.exe	Explorer.EXE
PID 3648 set thread context of 392	3648	09021.exe	Explorer.EXE
PID 508 set thread context of 392	508	svchost.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

1860 schtasks.exe

pid	process
1860	schtasks.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

09021.exesvchost.exe

pid	process
3648	09021.exe
3648	09021.exe
3648	09021.exe
3648	09021.exe
3648	09021.exe
3648	09021.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe
508	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

392 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

09021.exesvchost.exe

pid process

3648 09021.exe
3648 09021.exe
3648 09021.exe
3648 09021.exe
508 svchost.exe
508 svchost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

09021.exesvchost.exe

description pid process

Token: SeDebugPrivilege 3648 09021.exe
Token: SeDebugPrivilege 508 svchost.exe

pid	process
392	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3648	09021.exe
Token: SeDebugPrivilege	508	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

09021.exe09021.exesvchost.exe

description	pid	process	target process
PID 2532 wrote to memory of 1860	2532	09021.exe	schtasks.exe
PID 2532 wrote to memory of 1860	2532	09021.exe	schtasks.exe
PID 2532 wrote to memory of 1860	2532	09021.exe	schtasks.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 2532 wrote to memory of 3648	2532	09021.exe	09021.exe
PID 3648 wrote to memory of 508	3648	09021.exe	svchost.exe
PID 3648 wrote to memory of 508	3648	09021.exe	svchost.exe
PID 3648 wrote to memory of 508	3648	09021.exe	svchost.exe
PID 508 wrote to memory of 1284	508	svchost.exe	cmd.exe
PID 508 wrote to memory of 1284	508	svchost.exe	cmd.exe
PID 508 wrote to memory of 1284	508	svchost.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
PID:392

C:\Users\Admin\AppData\Local\Temp\09021.exe
"C:\Users\Admin\AppData\Local\Temp\09021.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2532

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QPfUom" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2B47.tmp"
3⤵
- Creates scheduled task(s)
PID:1860

C:\Users\Admin\AppData\Local\Temp\09021.exe
"C:\Users\Admin\AppData\Local\Temp\09021.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3648

C:\Windows\SysWOW64\svchost.exe
"C:\Windows\SysWOW64\svchost.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:508

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\09021.exe"
5⤵
PID:1284

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/392-130-0x0000000004C50000-0x0000000004DA7000-memory.dmp

Filesize
1.3MB

Download
memory/392-139-0x0000000005F40000-0x00000000060CE000-memory.dmp

Filesize
1.6MB

Download
memory/392-132-0x0000000004DB0000-0x0000000004F10000-memory.dmp

Filesize
1.4MB

Download
memory/508-138-0x0000000003280000-0x0000000003313000-memory.dmp

Filesize
588KB

Download
memory/508-136-0x0000000002E00000-0x0000000002F4A000-memory.dmp

Filesize
1.3MB

Download
memory/508-135-0x0000000002B60000-0x0000000002B8E000-memory.dmp

Filesize
184KB

Download
memory/508-134-0x0000000000040000-0x000000000004C000-memory.dmp

Filesize
48KB

Download
memory/508-133-0x0000000000000000-mapping.dmp

Download
memory/1284-137-0x0000000000000000-mapping.dmp

Download
memory/1860-125-0x0000000000000000-mapping.dmp

Download
memory/2532-122-0x0000000007DC0000-0x0000000007DC1000-memory.dmp

Filesize
4KB

Download
memory/2532-120-0x0000000005920000-0x000000000593D000-memory.dmp

Filesize
116KB

Download
memory/2532-117-0x0000000005D10000-0x0000000005D11000-memory.dmp

Filesize
4KB

Download
memory/2532-118-0x0000000005740000-0x0000000005741000-memory.dmp

Filesize
4KB

Download
memory/2532-119-0x00000000056D0000-0x00000000056D1000-memory.dmp

Filesize
4KB

Download
memory/2532-124-0x0000000007F60000-0x0000000007F91000-memory.dmp

Filesize
196KB

Download
memory/2532-121-0x0000000005810000-0x0000000005D0E000-memory.dmp

Filesize
5.0MB

Download
memory/2532-123-0x0000000007F00000-0x0000000007F60000-memory.dmp

Filesize
384KB

Download
memory/2532-115-0x0000000000E10000-0x0000000000E11000-memory.dmp

Filesize
4KB

Download
memory/3648-131-0x00000000014A0000-0x00000000014B4000-memory.dmp

Filesize
80KB

Download
memory/3648-127-0x000000000041EAB0-mapping.dmp

Download
memory/3648-126-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/3648-128-0x0000000001140000-0x0000000001460000-memory.dmp

Filesize
3.1MB

Download
memory/3648-129-0x0000000001460000-0x0000000001474000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads