formbook | 2a7a9c6d4505766ddf0a6c7dde9c2ae52369408fbe5ce93d0d3d76bf992b28dd

General

Target

TT.exe
Size

228KB
MD5

27c863c479b0542b3bad21a67ad1406d
SHA1

791e1d123c275ac4451c5550635c0a67eb4398a6
SHA256

2a7a9c6d4505766ddf0a6c7dde9c2ae52369408fbe5ce93d0d3d76bf992b28dd
SHA512

9b66354f49ade9d600e741cb2e626796830260745b1cd7540d611dc19e8576cacad95a9e03614ba36149df440cbe1efb7de5e73b4fce3a4ab7d60c42451b04da

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://www.knighttechinca.com/dxe/

Decoy

sardarfarm.com

959tremont.com

privat-livecam.net

ansel-homebakery.com

joysupermarket.com

peninsulamatchmakers.net

northsytyle.com

radioconexaoubermusic.com

relocatingrealtor.com

desyrnan.com

onlinehoortoestel.online

enpointe.online

rvvikings.com

paulpoirier.com

shitarpa.net

kerneis.net

rokitreach.com

essentiallygaia.com

prestiged.net

fuerzaagavera.com

Signatures

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

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1740-63-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1648-71-0x00000000000D0000-0x00000000000FE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

752 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

TT.exe

pid process

1048 TT.exe

pid	process
752	cmd.exe

pid	process
1048	TT.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

TT.exeTT.execmstp.exe

description	pid	process	target process
PID 1048 set thread context of 1740	1048	TT.exe	TT.exe
PID 1740 set thread context of 1208	1740	TT.exe	Explorer.EXE
PID 1648 set thread context of 1208	1648	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

Suspicious behavior: EnumeratesProcesses 30 IoCs

Processes:

TT.execmstp.exe

pid	process
1740	TT.exe
1740	TT.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe
1648	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

TT.exeTT.execmstp.exe

pid process

1048 TT.exe
1740 TT.exe
1740 TT.exe
1740 TT.exe
1648 cmstp.exe
1648 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

TT.execmstp.exe

description pid process

Token: SeDebugPrivilege 1740 TT.exe
Token: SeDebugPrivilege 1648 cmstp.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE
1208 Explorer.EXE

pid	process
1208	Explorer.EXE

pid	process
1048	TT.exe
1740	TT.exe
1740	TT.exe
1740	TT.exe
1648	cmstp.exe
1648	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1740	TT.exe
Token: SeDebugPrivilege	1648	cmstp.exe

pid	process
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE

pid	process
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE
1208	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

TT.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1048 wrote to memory of 1740	1048	TT.exe	TT.exe
PID 1048 wrote to memory of 1740	1048	TT.exe	TT.exe
PID 1048 wrote to memory of 1740	1048	TT.exe	TT.exe
PID 1048 wrote to memory of 1740	1048	TT.exe	TT.exe
PID 1048 wrote to memory of 1740	1048	TT.exe	TT.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1648	1208	Explorer.EXE	cmstp.exe
PID 1648 wrote to memory of 752	1648	cmstp.exe	cmd.exe
PID 1648 wrote to memory of 752	1648	cmstp.exe	cmd.exe
PID 1648 wrote to memory of 752	1648	cmstp.exe	cmd.exe
PID 1648 wrote to memory of 752	1648	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:1208

C:\Users\Admin\AppData\Local\Temp\TT.exe
"C:\Users\Admin\AppData\Local\Temp\TT.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1048

C:\Users\Admin\AppData\Local\Temp\TT.exe
"C:\Users\Admin\AppData\Local\Temp\TT.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1740

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1348

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:316

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1600

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:1648

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\TT.exe"
3⤵
- Deletes itself
PID:752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsx1151.tmp\myx92o78208f0o.dll
MD5
8bb43d922f43f1eff660149ae2561939

SHA1
aa781d53bf123d1dead8c960eebb1079412b36f1

SHA256
e61d2234de5a9841b5685b5ff23a2baa6d56f564cdafba16709327adb642c2d1

SHA512
76dbf56e555404296b185de8b512dd287cb791b0bbdd2882dd2a86dbeed28551ee57e7b699fc0b5133171a4b47155cce6afb7c02c908578e130856092955e96b

Download Submit
memory/752-69-0x0000000000000000-mapping.dmp

Download
memory/1048-62-0x0000000000430000-0x0000000000432000-memory.dmp

Filesize
8KB

Download
memory/1048-59-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/1208-74-0x0000000006FC0000-0x000000000714E000-memory.dmp

Filesize
1.6MB

Download
memory/1208-66-0x0000000004D20000-0x0000000004E1D000-memory.dmp

Filesize
1012KB

Download
memory/1648-71-0x00000000000D0000-0x00000000000FE000-memory.dmp

Filesize
184KB

Download
memory/1648-73-0x0000000000880000-0x0000000000913000-memory.dmp

Filesize
588KB

Download
memory/1648-72-0x0000000000B50000-0x0000000000E53000-memory.dmp

Filesize
3.0MB

Download
memory/1648-67-0x0000000000000000-mapping.dmp

Download
memory/1648-70-0x0000000000F80000-0x0000000000F98000-memory.dmp

Filesize
96KB

Download
memory/1740-61-0x000000000041EAF0-mapping.dmp

Download
memory/1740-64-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1740-65-0x00000000003E0000-0x00000000003F4000-memory.dmp

Filesize
80KB

Download
memory/1740-63-0x0000000000400000-0x000000000042E000-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