formbook | 62678459c076b6993bbe9cc617bde236afe8a87906f5de98adc375665ba0a84f

General

Target

001100202021.exe
Size

462KB
MD5

54c9006a6634870e0f02fca2b6ba0d4f
SHA1

7a3fffad9a7be88516c8004e9e6b55fcf4757e35
SHA256

62678459c076b6993bbe9cc617bde236afe8a87906f5de98adc375665ba0a84f
SHA512

295ccdd3a3ff79957d559d9cdb9a8d8f2d6fbf471667516a03e0a127395ad33927e3b80f0245229a208fe1460a4def93542b551e1eb5bb5cf0cd428a59f7f697

Score

10^/10

formbook u1bs rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

u1bs

C2

http://www.vgmpradio.com/u1bs/

Decoy

ln-safe-keepingmisva4.xyz

rtfh.xyz

awolin.link

metadlf.com

cardboardcasual.com

psicoterapiahablada.com

spaminator.xyz

hnjqzl.top

dentalyinovasi.site

biosynblas.com

zvyk.store

shreevishwakarmaservices.com

showersplash.com

norbert-roth.com

londoncapitaltraders.com

istanbuldonerkebabheroncity.com

realdiscountsnow.com

marlinplumbingwnc.com

magazinadziavane.com

qantv.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/2852-125-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2852-126-0x000000000041F130-mapping.dmp	formbook
behavioral2/memory/1100-134-0x0000000000DA0000-0x0000000000DCF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

001100202021.exe001100202021.exesystray.exe

description	pid	process	target process
PID 364 set thread context of 2852	364	001100202021.exe	001100202021.exe
PID 2852 set thread context of 2800	2852	001100202021.exe	Explorer.EXE
PID 1100 set thread context of 2800	1100	systray.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

2480 schtasks.exe

pid	process
2480	schtasks.exe

Suspicious behavior: EnumeratesProcesses 42 IoCs

Processes:

001100202021.exesystray.exe

pid	process
2852	001100202021.exe
2852	001100202021.exe
2852	001100202021.exe
2852	001100202021.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe
1100	systray.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2800 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

001100202021.exesystray.exe

pid process

2852 001100202021.exe
2852 001100202021.exe
2852 001100202021.exe
1100 systray.exe
1100 systray.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

001100202021.exesystray.exe

description pid process

Token: SeDebugPrivilege 2852 001100202021.exe
Token: SeDebugPrivilege 1100 systray.exe

pid	process
2800	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2852	001100202021.exe
Token: SeDebugPrivilege	1100	systray.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

001100202021.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 364 wrote to memory of 2480	364	001100202021.exe	schtasks.exe
PID 364 wrote to memory of 2480	364	001100202021.exe	schtasks.exe
PID 364 wrote to memory of 2480	364	001100202021.exe	schtasks.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 364 wrote to memory of 2852	364	001100202021.exe	001100202021.exe
PID 2800 wrote to memory of 1100	2800	Explorer.EXE	systray.exe
PID 2800 wrote to memory of 1100	2800	Explorer.EXE	systray.exe
PID 2800 wrote to memory of 1100	2800	Explorer.EXE	systray.exe
PID 1100 wrote to memory of 1188	1100	systray.exe	cmd.exe
PID 1100 wrote to memory of 1188	1100	systray.exe	cmd.exe
PID 1100 wrote to memory of 1188	1100	systray.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2800

C:\Users\Admin\AppData\Local\Temp\001100202021.exe
"C:\Users\Admin\AppData\Local\Temp\001100202021.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jRrLrCYA" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA062.tmp"
3⤵
- Creates scheduled task(s)
PID:2480

C:\Users\Admin\AppData\Local\Temp\001100202021.exe
"C:\Users\Admin\AppData\Local\Temp\001100202021.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2852

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:692

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:1072

C:\Windows\SysWOW64\systray.exe
"C:\Windows\SysWOW64\systray.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\001100202021.exe"
3⤵
PID:1188

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/364-122-0x0000000007E90000-0x0000000007E91000-memory.dmp

Filesize
4KB

Download
memory/364-117-0x0000000005B60000-0x0000000005B61000-memory.dmp

Filesize
4KB

Download
memory/364-118-0x0000000005710000-0x0000000005711000-memory.dmp

Filesize
4KB

Download
memory/364-119-0x0000000005660000-0x0000000005B5E000-memory.dmp

Filesize
5.0MB

Download
memory/364-120-0x0000000005880000-0x0000000005881000-memory.dmp

Filesize
4KB

Download
memory/364-121-0x0000000005B10000-0x0000000005B17000-memory.dmp

Filesize
28KB

Download
memory/364-123-0x0000000007F30000-0x0000000007F82000-memory.dmp

Filesize
328KB

Download
memory/364-115-0x0000000000D20000-0x0000000000D21000-memory.dmp

Filesize
4KB

Download
memory/1100-131-0x0000000000000000-mapping.dmp

Download
memory/1100-136-0x0000000004CF0000-0x0000000004D83000-memory.dmp

Filesize
588KB

Download
memory/1100-135-0x0000000004FF0000-0x0000000005310000-memory.dmp

Filesize
3.1MB

Download
memory/1100-134-0x0000000000DA0000-0x0000000000DCF000-memory.dmp

Filesize
188KB

Download
memory/1100-133-0x0000000000FD0000-0x0000000000FD6000-memory.dmp

Filesize
24KB

Download
memory/1188-132-0x0000000000000000-mapping.dmp

Download
memory/2480-124-0x0000000000000000-mapping.dmp

Download
memory/2800-130-0x0000000005260000-0x00000000053AB000-memory.dmp

Filesize
1.3MB

Download
memory/2800-137-0x0000000002900000-0x00000000029E5000-memory.dmp

Filesize
916KB

Download
memory/2852-129-0x0000000000D00000-0x0000000000D14000-memory.dmp

Filesize
80KB

Download
memory/2852-128-0x0000000000FF0000-0x0000000001310000-memory.dmp

Filesize
3.1MB

Download
memory/2852-126-0x000000000041F130-mapping.dmp

Download
memory/2852-125-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads