formbook | bcb4b428f2487d1dfc2d5f36fdd7f334e7915a5fad15f46835f6a8420002c327

General

Target

Beyan bilgileri.exe
Size

320KB
MD5

170180f6600397459bd336d784f68d29
SHA1

d1a3b3b37326d4f3f229785370a6207d3a4c18cc
SHA256

bcb4b428f2487d1dfc2d5f36fdd7f334e7915a5fad15f46835f6a8420002c327
SHA512

ddf9d91ce714e3dc0c85df6f98a6e6705730ffaff1cbb1973578a8783db532bb76a455e31c080255e7fcf8693ae860bfac42462823bef912dd59d32ef0c03297
SSDEEP

6144:9kwqnbxKVJjrA3CSa/2jgPhOJUoPTJd4U87psxJMUzU:ksS3CSW2GmUoPTcU87pcRw

Score

10^/10

formbook tc10 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

tc10

Decoy

mwigyu.com

sepuluholx.com

nsdigitalagency.com

horrorkore.com

santaclaracoimbrakarate.com

myeternalsummer.com

laosmidnight-lotto.com

haremp.xyz

boyace.top

unusualwithdrawal.com

wildflowerkidsri.com

backlitvps.dev

topwellgas.com

k3nnsworld3.com

wanbang.xyz

cntvc.net

sjcamden.church

pussit24.com

claml.com

statisticsturkey.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/2408-139-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3012-146-0x00000000005D0000-0x00000000005FF000-memory.dmp	formbook
behavioral2/memory/3012-150-0x00000000005D0000-0x00000000005FF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

Processes:

sxdjahtyxs.exesxdjahtyxs.exe

pid process

2036 sxdjahtyxs.exe
2408 sxdjahtyxs.exe

pid	process
2036	sxdjahtyxs.exe
2408	sxdjahtyxs.exe

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{674CC9A0-A3EE-4558-9EBD-28889CFCB764}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{B72752E6-823B-49E2-ADD2-C25464E112F0}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

sxdjahtyxs.exesxdjahtyxs.execmstp.exe

description	pid	process	target process
PID 2036 set thread context of 2408	2036	sxdjahtyxs.exe	sxdjahtyxs.exe
PID 2408 set thread context of 3004	2408	sxdjahtyxs.exe	Explorer.EXE
PID 3012 set thread context of 3004	3012	cmstp.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

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

sxdjahtyxs.execmstp.exe

pid	process
2408	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe
3012	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

sxdjahtyxs.exesxdjahtyxs.execmstp.exe

pid process

2036 sxdjahtyxs.exe
2408 sxdjahtyxs.exe
2408 sxdjahtyxs.exe
2408 sxdjahtyxs.exe
3012 cmstp.exe
3012 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

sxdjahtyxs.execmstp.exe

description pid process

Token: SeDebugPrivilege 2408 sxdjahtyxs.exe
Token: SeDebugPrivilege 3012 cmstp.exe
Suspicious use of FindShellTrayWindow 3 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
3004 Explorer.EXE
3004 Explorer.EXE
Suspicious use of SendNotifyMessage 3 IoCs

Processes:

Explorer.EXE

pid process

3004 Explorer.EXE
3004 Explorer.EXE
3004 Explorer.EXE

pid	process
3004	Explorer.EXE

pid	process
2036	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
2408	sxdjahtyxs.exe
3012	cmstp.exe
3012	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	2408	sxdjahtyxs.exe
Token: SeDebugPrivilege	3012	cmstp.exe

pid	process
3004	Explorer.EXE
3004	Explorer.EXE
3004	Explorer.EXE

pid	process
3004	Explorer.EXE
3004	Explorer.EXE
3004	Explorer.EXE

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Beyan bilgileri.exesxdjahtyxs.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1152 wrote to memory of 2036	1152	Beyan bilgileri.exe	sxdjahtyxs.exe
PID 1152 wrote to memory of 2036	1152	Beyan bilgileri.exe	sxdjahtyxs.exe
PID 1152 wrote to memory of 2036	1152	Beyan bilgileri.exe	sxdjahtyxs.exe
PID 2036 wrote to memory of 2408	2036	sxdjahtyxs.exe	sxdjahtyxs.exe
PID 2036 wrote to memory of 2408	2036	sxdjahtyxs.exe	sxdjahtyxs.exe
PID 2036 wrote to memory of 2408	2036	sxdjahtyxs.exe	sxdjahtyxs.exe
PID 2036 wrote to memory of 2408	2036	sxdjahtyxs.exe	sxdjahtyxs.exe
PID 3004 wrote to memory of 3012	3004	Explorer.EXE	cmstp.exe
PID 3004 wrote to memory of 3012	3004	Explorer.EXE	cmstp.exe
PID 3004 wrote to memory of 3012	3004	Explorer.EXE	cmstp.exe
PID 3012 wrote to memory of 1936	3012	cmstp.exe	cmd.exe
PID 3012 wrote to memory of 1936	3012	cmstp.exe	cmd.exe
PID 3012 wrote to memory of 1936	3012	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:3004

C:\Users\Admin\AppData\Local\Temp\Beyan bilgileri.exe
"C:\Users\Admin\AppData\Local\Temp\Beyan bilgileri.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1152

C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe
"C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe" C:\Users\Admin\AppData\Local\Temp\juhfdccvz.zs
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2036

C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe
"C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2408

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:3012

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe"
3⤵
PID:1936

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\crqsdy.s
Filesize
185KB

MD5
08d14e71049e4c2e82035f2e5d166092

SHA1
836354041c895bd4e4e77dc0900d5b654db2c669

SHA256
0b949d745439686a16dcb7a23dd15a371ac09b0f5d9ad7f66c8520ba1df5947b

SHA512
5a2e10693749d254d06ad39f2632766c18af7463e5b9beda95106b022b1c448e44b1861f58358b609d55a248706f4e450a4c87cc956fc6eb377edbb0ab81d16b

Download Submit
C:\Users\Admin\AppData\Local\Temp\juhfdccvz.zs
Filesize
5KB

MD5
af1548c7a4eda52ae9b4440e3aa543a6

SHA1
eb4a7522d4b30d89ac3ea451269af04bd34e6578

SHA256
68594204c523f2531c8e6d5e2df1369bae0b406179c64cf563389c95f715e777

SHA512
ab700a3f4d29c1af8dbb3a84da55192ab11150936c922e3d109e57c7b7f388473c35bf182c32152ca5adaf91792b6f87e18575134d4038a20063368fbc435f80

Download Submit
C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe
Filesize
276KB

MD5
72ccf0ff6003ca8af9babe0eb60fc193

SHA1
a74d85ff6614e881d427ece7d107d6f0aafaf976

SHA256
31341c01ac1463ce0d4aa155ab5dd32eb9e207c00aff341cdfdc8043d8bb2e5a

SHA512
59f395e7a54d1a0eb3628d2c89b9b448d46538917a050c8b5fd5c52aeb08da16fe0442e5bd5196ebd338fb149ff446ce1b6daab85f9187425f27f7a2da5be3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe
Filesize
276KB

MD5
72ccf0ff6003ca8af9babe0eb60fc193

SHA1
a74d85ff6614e881d427ece7d107d6f0aafaf976

SHA256
31341c01ac1463ce0d4aa155ab5dd32eb9e207c00aff341cdfdc8043d8bb2e5a

SHA512
59f395e7a54d1a0eb3628d2c89b9b448d46538917a050c8b5fd5c52aeb08da16fe0442e5bd5196ebd338fb149ff446ce1b6daab85f9187425f27f7a2da5be3aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\sxdjahtyxs.exe
Filesize
276KB

MD5
72ccf0ff6003ca8af9babe0eb60fc193

SHA1
a74d85ff6614e881d427ece7d107d6f0aafaf976

SHA256
31341c01ac1463ce0d4aa155ab5dd32eb9e207c00aff341cdfdc8043d8bb2e5a

SHA512
59f395e7a54d1a0eb3628d2c89b9b448d46538917a050c8b5fd5c52aeb08da16fe0442e5bd5196ebd338fb149ff446ce1b6daab85f9187425f27f7a2da5be3aa

Download Submit
memory/1936-144-0x0000000000000000-mapping.dmp

Download
memory/2036-132-0x0000000000000000-mapping.dmp

Download
memory/2408-137-0x0000000000000000-mapping.dmp

Download
memory/2408-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2408-140-0x0000000000A70000-0x0000000000DBA000-memory.dmp

Filesize
3.3MB

Download
memory/2408-141-0x00000000006D0000-0x00000000006E4000-memory.dmp

Filesize
80KB

Download
memory/3004-142-0x00000000036A0000-0x00000000037E3000-memory.dmp

Filesize
1.3MB

Download
memory/3004-149-0x0000000008B40000-0x0000000008C09000-memory.dmp

Filesize
804KB

Download
memory/3004-151-0x0000000008B40000-0x0000000008C09000-memory.dmp

Filesize
804KB

Download
memory/3012-143-0x0000000000000000-mapping.dmp

Download
memory/3012-145-0x00000000004B0000-0x00000000004C6000-memory.dmp

Filesize
88KB

Download
memory/3012-147-0x0000000002670000-0x00000000029BA000-memory.dmp

Filesize
3.3MB

Download
memory/3012-146-0x00000000005D0000-0x00000000005FF000-memory.dmp

Filesize
188KB

Download
memory/3012-148-0x00000000024E0000-0x0000000002573000-memory.dmp

Filesize
588KB

Download
memory/3012-150-0x00000000005D0000-0x00000000005FF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads