formbook | fea591c91f4db5a9238525988d1844cf9d68331b4cf4425acedff0fb9fb9b2d7

General

Target

caietul de sarcini.exe
Size

790KB
MD5

f28ec13e3098402bc68fea894fd99053
SHA1

4c752327d2e9d1118e5daae6100dbeaceecfc987
SHA256

f4156e15b465020e6687a23a63eb4b7c84a18f90ead4665087c6c2e5a09b455d
SHA512

02703aa721ccbd210ba5fb46421f4c675266edf7a4c2b2e47bbca9b08845088d72e1656f38fcd5f010ad27da0adf395d2d63c11bde672f33f9168e6a847ea173

Score

10^/10

formbook kvsz rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kvsz

Decoy

okashyns.com

sbsgamedaejeon-two.com

drb77.com

top5dating.com

websprings.online

voizers.com

zenith.site

lahistoriade.com

qv85.com

armandonieto.com

priestvedic.com

jessandjeff.net

magic-desktop.com

jitaji.com

ldmeili.com

yuwanqingmy.com

buzhouorg.com

chaiseloungereviews.com

m2g8way.com

freespin-support.com

Signatures

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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/956-64-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/956-65-0x000000000041ECA0-mapping.dmp	formbook
behavioral1/memory/956-67-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1736-76-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

Processes:

caietul de sarcini.exeRegSvcs.exesystray.exe

description	pid	process	target process
PID 1668 set thread context of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 956 set thread context of 1356	956	RegSvcs.exe	Explorer.EXE
PID 956 set thread context of 1356	956	RegSvcs.exe	Explorer.EXE
PID 1736 set thread context of 1356	1736	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

1172 schtasks.exe

pid	process
1172	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

caietul de sarcini.exeRegSvcs.exesystray.exe

pid	process
1668	caietul de sarcini.exe
956	RegSvcs.exe
956	RegSvcs.exe
956	RegSvcs.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe
1736	systray.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

RegSvcs.exesystray.exe

pid process

956 RegSvcs.exe
956 RegSvcs.exe
956 RegSvcs.exe
956 RegSvcs.exe
1736 systray.exe
1736 systray.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

caietul de sarcini.exeRegSvcs.exesystray.exe

description pid process

Token: SeDebugPrivilege 1668 caietul de sarcini.exe
Token: SeDebugPrivilege 956 RegSvcs.exe
Token: SeDebugPrivilege 1736 systray.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1356 Explorer.EXE
1356 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1356 Explorer.EXE
1356 Explorer.EXE

pid	process
956	RegSvcs.exe
956	RegSvcs.exe
956	RegSvcs.exe
956	RegSvcs.exe
1736	systray.exe
1736	systray.exe

description	pid	process
Token: SeDebugPrivilege	1668	caietul de sarcini.exe
Token: SeDebugPrivilege	956	RegSvcs.exe
Token: SeDebugPrivilege	1736	systray.exe

pid	process
1356	Explorer.EXE
1356	Explorer.EXE

pid	process
1356	Explorer.EXE
1356	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

caietul de sarcini.exeExplorer.EXEsystray.exe

description	pid	process	target process
PID 1668 wrote to memory of 1172	1668	caietul de sarcini.exe	schtasks.exe
PID 1668 wrote to memory of 1172	1668	caietul de sarcini.exe	schtasks.exe
PID 1668 wrote to memory of 1172	1668	caietul de sarcini.exe	schtasks.exe
PID 1668 wrote to memory of 1172	1668	caietul de sarcini.exe	schtasks.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1668 wrote to memory of 956	1668	caietul de sarcini.exe	RegSvcs.exe
PID 1356 wrote to memory of 1736	1356	Explorer.EXE	systray.exe
PID 1356 wrote to memory of 1736	1356	Explorer.EXE	systray.exe
PID 1356 wrote to memory of 1736	1356	Explorer.EXE	systray.exe
PID 1356 wrote to memory of 1736	1356	Explorer.EXE	systray.exe
PID 1736 wrote to memory of 360	1736	systray.exe	cmd.exe
PID 1736 wrote to memory of 360	1736	systray.exe	cmd.exe
PID 1736 wrote to memory of 360	1736	systray.exe	cmd.exe
PID 1736 wrote to memory of 360	1736	systray.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:1356

C:\Users\Admin\AppData\Local\Temp\caietul de sarcini.exe
"C:\Users\Admin\AppData\Local\Temp\caietul de sarcini.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oHtylzPIaQr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDA88.tmp"
3⤵
- Creates scheduled task(s)
PID:1172

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:956

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:1736

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:360

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\tmpDA88.tmp
Filesize
1KB

MD5
4389a92561624069c7171a7d1640aa6e

SHA1
27caa0458ffb60055c5985f08604886e15380977

SHA256
5fa3838ec94acedd551dfb952db8bff51fe07c020c8ece2edcbd5528b50079bc

SHA512
32c6517c7b81fbe658051b3ec6926363de8c128d2a347cdf86b1acb139c6f3aaaea34b5199aba55c19dbad2dfad2bcfc08d5efaed2a2713a6b6e6d2d58f3da3f

Download Submit
memory/360-77-0x0000000000000000-mapping.dmp

Download
memory/956-68-0x0000000000900000-0x0000000000C03000-memory.dmp

Filesize
3.0MB

Download
memory/956-65-0x000000000041ECA0-mapping.dmp

Download
memory/956-69-0x00000000001A0000-0x00000000001B4000-memory.dmp

Filesize
80KB

Download
memory/956-61-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/956-62-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/956-64-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/956-67-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/956-72-0x00000000001E0000-0x00000000001F4000-memory.dmp

Filesize
80KB

Download
memory/1172-59-0x0000000000000000-mapping.dmp

Download
memory/1356-73-0x00000000061A0000-0x0000000006266000-memory.dmp

Filesize
792KB

Download
memory/1356-70-0x0000000006AE0000-0x0000000006C35000-memory.dmp

Filesize
1.3MB

Download
memory/1356-80-0x0000000006D70000-0x0000000006E9B000-memory.dmp

Filesize
1.2MB

Download
memory/1668-58-0x0000000000820000-0x0000000000864000-memory.dmp

Filesize
272KB

Download
memory/1668-57-0x0000000005120000-0x0000000005192000-memory.dmp

Filesize
456KB

Download
memory/1668-56-0x0000000000600000-0x0000000000610000-memory.dmp

Filesize
64KB

Download
memory/1668-55-0x00000000762C1000-0x00000000762C3000-memory.dmp

Filesize
8KB

Download
memory/1668-54-0x00000000000C0000-0x000000000018C000-memory.dmp

Filesize
816KB

Download
memory/1736-74-0x0000000000000000-mapping.dmp

Download
memory/1736-75-0x0000000000C80000-0x0000000000C85000-memory.dmp

Filesize
20KB

Download
memory/1736-76-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1736-78-0x0000000002090000-0x0000000002393000-memory.dmp

Filesize
3.0MB

Download
memory/1736-79-0x00000000004F0000-0x0000000000583000-memory.dmp

Filesize
588KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads