formbook | ed806d196c4c8573b7044e2a1f98f01527947c6e95e97a6e9b061ede6ec75664

General

Target

worked.exe
Size

776KB
MD5

a8417cfd71637c7371986737cff269cf
SHA1

62764e915771688218d9e93d139a85f8d983e2b8
SHA256

ed806d196c4c8573b7044e2a1f98f01527947c6e95e97a6e9b061ede6ec75664
SHA512

35af7f1511402987a6abcb14ce1be7ccfeaee5fa11ae6c66eb9b1ac0d3dd6690e6f1be8e1163c90b8104b4845da89d7468484b730dc669340694a7a21feeb181

Score

10^/10

formbook ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.maalkhairaatwosu.com/zn7/

Decoy

xaozal.com

yanafarms.com

domennyarendi64.net

bumiflogrance.com

cre8tivspace.com

s3video.com

eshelwoodwork.com

centaurme.com

novarticle.com

jbastavi.com

hueandboldcreative.com

phraeudom.com

bright.discount

brandonandrana.com

budundergisi.xyz

wedochin.com

cryptowaveride.com

dunnwrightconst.com

hakador.net

costcostock.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
behavioral1/memory/568-10-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/568-11-0x000000000041EAE0-mapping.dmp	formbook
behavioral1/memory/1480-19-0x00000000000C0000-0x00000000000EE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

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

System Information Discovery
T1082

pid	process
968	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

worked.exeworked.exewininit.exe

description	pid	process	target process
PID 1740 set thread context of 568	1740	worked.exe	worked.exe
PID 568 set thread context of 1268	568	worked.exe	Explorer.EXE
PID 1480 set thread context of 1268	1480	wininit.exe	Explorer.EXE

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

396 schtasks.exe

pid	process
396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

worked.exewininit.exe

pid	process
568	worked.exe
568	worked.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe
1480	wininit.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

worked.exewininit.exe

pid process

568 worked.exe
568 worked.exe
568 worked.exe
1480 wininit.exe
1480 wininit.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

worked.exewininit.exe

description pid process

Token: SeDebugPrivilege 568 worked.exe
Token: SeDebugPrivilege 1480 wininit.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	568	worked.exe
Token: SeDebugPrivilege	1480	wininit.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

worked.exeExplorer.EXEwininit.exe

description	pid	process	target process
PID 1740 wrote to memory of 396	1740	worked.exe	schtasks.exe
PID 1740 wrote to memory of 396	1740	worked.exe	schtasks.exe
PID 1740 wrote to memory of 396	1740	worked.exe	schtasks.exe
PID 1740 wrote to memory of 396	1740	worked.exe	schtasks.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1740 wrote to memory of 568	1740	worked.exe	worked.exe
PID 1268 wrote to memory of 1480	1268	Explorer.EXE	wininit.exe
PID 1268 wrote to memory of 1480	1268	Explorer.EXE	wininit.exe
PID 1268 wrote to memory of 1480	1268	Explorer.EXE	wininit.exe
PID 1268 wrote to memory of 1480	1268	Explorer.EXE	wininit.exe
PID 1480 wrote to memory of 968	1480	wininit.exe	cmd.exe
PID 1480 wrote to memory of 968	1480	wininit.exe	cmd.exe
PID 1480 wrote to memory of 968	1480	wininit.exe	cmd.exe
PID 1480 wrote to memory of 968	1480	wininit.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\worked.exe
"C:\Users\Admin\AppData\Local\Temp\worked.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kZrPLNaWRaF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCF8F.tmp"
3⤵
- Creates scheduled task(s)
PID:396

C:\Users\Admin\AppData\Local\Temp\worked.exe
"C:\Users\Admin\AppData\Local\Temp\worked.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:568

C:\Windows\SysWOW64\wininit.exe
"C:\Windows\SysWOW64\wininit.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\worked.exe"
3⤵
- Deletes itself
PID:968

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\tmpCF8F.tmp
MD5
62d40d943dc0ae5f55a7c223219f2fab

SHA1
f9139dd72b3b2546ba8324f230bb43d077b9d0be

SHA256
f11d55745b41351cb6a74f5629a6108f94394bb438e926c5af63e58734b87522

SHA512
fac0d9a2061d16da97fe81f650228ceba7e69886b4ffe3f5fccada076baf39c5f8fef54fd47eb9531eee88c274dbb9c946accd0f334107d967fa8e052b149bb3

Download Submit
memory/396-8-0x0000000000000000-mapping.dmp

Download
memory/568-11-0x000000000041EAE0-mapping.dmp

Download
memory/568-14-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/568-13-0x0000000000A30000-0x0000000000D33000-memory.dmp

Filesize
3.0MB

Download
memory/568-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/968-17-0x0000000000000000-mapping.dmp

Download
memory/1268-15-0x0000000006290000-0x00000000063AA000-memory.dmp

Filesize
1.1MB

Download
memory/1480-16-0x0000000000000000-mapping.dmp

Download
memory/1480-18-0x0000000000DC0000-0x0000000000DDA000-memory.dmp

Filesize
104KB

Download
memory/1480-19-0x00000000000C0000-0x00000000000EE000-memory.dmp

Filesize
184KB

Download
memory/1480-20-0x0000000000A70000-0x0000000000D73000-memory.dmp

Filesize
3.0MB

Download
memory/1480-21-0x0000000000980000-0x0000000000A13000-memory.dmp

Filesize
588KB

Download
memory/1740-7-0x00000000073B0000-0x0000000007416000-memory.dmp

Filesize
408KB

Download
memory/1740-6-0x0000000000500000-0x0000000000501000-memory.dmp

Filesize
4KB

Download
memory/1740-5-0x0000000000580000-0x00000000005A3000-memory.dmp

Filesize
140KB

Download
memory/1740-2-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/1740-3-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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