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
behavioral2/memory/3644-15-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/3644-16-0x000000000041EAE0-mapping.dmp	formbook
behavioral2/memory/2272-24-0x0000000000430000-0x000000000045E000-memory.dmp	formbook

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

System Information Discovery
T1082

Suspicious use of SetThreadContext 3 IoCs

Processes:

worked.exeworked.execmstp.exe

description	pid	process	target process
PID 728 set thread context of 3644	728	worked.exe	worked.exe
PID 3644 set thread context of 2868	3644	worked.exe	Explorer.EXE
PID 2272 set thread context of 2868	2272	cmstp.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

3468 schtasks.exe

pid	process
3468	schtasks.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

worked.execmstp.exe

pid	process
3644	worked.exe
3644	worked.exe
3644	worked.exe
3644	worked.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe
2272	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

worked.execmstp.exe

pid process

3644 worked.exe
3644 worked.exe
3644 worked.exe
2272 cmstp.exe
2272 cmstp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

worked.exeExplorer.EXEcmstp.exe

description	pid	process
Token: SeDebugPrivilege	3644	worked.exe
Token: SeShutdownPrivilege	2868	Explorer.EXE
Token: SeCreatePagefilePrivilege	2868	Explorer.EXE
Token: SeDebugPrivilege	2272	cmstp.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

2868 Explorer.EXE

pid	process
2868	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

worked.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 728 wrote to memory of 3468	728	worked.exe	schtasks.exe
PID 728 wrote to memory of 3468	728	worked.exe	schtasks.exe
PID 728 wrote to memory of 3468	728	worked.exe	schtasks.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 728 wrote to memory of 3644	728	worked.exe	worked.exe
PID 2868 wrote to memory of 2272	2868	Explorer.EXE	cmstp.exe
PID 2868 wrote to memory of 2272	2868	Explorer.EXE	cmstp.exe
PID 2868 wrote to memory of 2272	2868	Explorer.EXE	cmstp.exe
PID 2272 wrote to memory of 1632	2272	cmstp.exe	cmd.exe
PID 2272 wrote to memory of 1632	2272	cmstp.exe	cmd.exe
PID 2272 wrote to memory of 1632	2272	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2868

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:728

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kZrPLNaWRaF" /XML "C:\Users\Admin\AppData\Local\Temp\tmp688E.tmp"
3⤵
- Creates scheduled task(s)
PID:3468

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:3644

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2272

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\worked.exe"
3⤵
PID:1632

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\tmp688E.tmp
MD5
e8b55c40a55ae41e892c7f92c6d76ad1

SHA1
3c599446287e60195dd1175b48124cba6b88fa64

SHA256
da2c540c42ccbad5f8e7a77f42e85ee56d3c9da98f04bfdc5802c61fd14c7dd2

SHA512
05d39576057512657e9a3576a585b4ad1800a6f4187c1c9381407eb8466d97044975a7e513082b35e05380821bb7f5d1c5cd4cb2ed91c761b379cbfeaf5d28a9

Download Submit
memory/728-2-0x0000000073E00000-0x00000000744EE000-memory.dmp

Filesize
6.9MB

Download
memory/728-3-0x0000000000A60000-0x0000000000A61000-memory.dmp

Filesize
4KB

Download
memory/728-5-0x0000000007840000-0x0000000007841000-memory.dmp

Filesize
4KB

Download
memory/728-6-0x0000000007DE0000-0x0000000007DE1000-memory.dmp

Filesize
4KB

Download
memory/728-7-0x00000000078E0000-0x00000000078E1000-memory.dmp

Filesize
4KB

Download
memory/728-8-0x0000000005370000-0x0000000005371000-memory.dmp

Filesize
4KB

Download
memory/728-9-0x0000000005390000-0x0000000005391000-memory.dmp

Filesize
4KB

Download
memory/728-10-0x0000000007AA0000-0x0000000007AA1000-memory.dmp

Filesize
4KB

Download
memory/728-11-0x0000000007A60000-0x0000000007A83000-memory.dmp

Filesize
140KB

Download
memory/728-12-0x00000000085D0000-0x0000000008636000-memory.dmp

Filesize
408KB

Download
memory/1632-25-0x0000000000000000-mapping.dmp

Download
memory/2272-23-0x0000000001040000-0x0000000001056000-memory.dmp

Filesize
88KB

Download
memory/2272-22-0x0000000000000000-mapping.dmp

Download
memory/2272-24-0x0000000000430000-0x000000000045E000-memory.dmp

Filesize
184KB

Download
memory/2272-26-0x0000000004460000-0x0000000004780000-memory.dmp

Filesize
3.1MB

Download
memory/2272-27-0x0000000000E80000-0x0000000000F13000-memory.dmp

Filesize
588KB

Download
memory/2868-21-0x00000000045A0000-0x00000000046A1000-memory.dmp

Filesize
1.0MB

Download
memory/2868-28-0x0000000005E20000-0x0000000005F5D000-memory.dmp

Filesize
1.2MB

Download
memory/3468-13-0x0000000000000000-mapping.dmp

Download
memory/3644-16-0x000000000041EAE0-mapping.dmp

Download
memory/3644-19-0x00000000012D0000-0x00000000015F0000-memory.dmp

Filesize
3.1MB

Download
memory/3644-20-0x0000000000E70000-0x0000000000E84000-memory.dmp

Filesize
80KB

Download
memory/3644-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads