formbook | 2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd

General

Target

SHIPPING DOCUMENT.exe
Size

229KB
MD5

2a7d9a26f63de29bbf21016b055560b1
SHA1

8110d53cc373121512c1fb90c4ce12fedc07803a
SHA256

2a728511ab345b4207ea5959439df12205796548388cc170b427110f9cc247dd
SHA512

4bb88aaa2c8f9d8d3ecbc53910b20c1eb121222f31503792196cac567f640125e75e92c99147732d24db24ae7d81f01a0fca7c1ba3627a1565c9702e89303cc3

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
behavioral2/memory/1512-117-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/1592-124-0x0000000002FD0000-0x0000000002FFE000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

SHIPPING DOCUMENT.exe

pid process

1968 SHIPPING DOCUMENT.exe

pid	process
1968	SHIPPING DOCUMENT.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SHIPPING DOCUMENT.exeSHIPPING DOCUMENT.execmstp.exe

description	pid	process	target process
PID 1968 set thread context of 1512	1968	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1512 set thread context of 1392	1512	SHIPPING DOCUMENT.exe	Explorer.EXE
PID 1592 set thread context of 1392	1592	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 62 IoCs

Processes:

SHIPPING DOCUMENT.execmstp.exe

pid	process
1512	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe
1592	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1392 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

SHIPPING DOCUMENT.exeSHIPPING DOCUMENT.execmstp.exe

pid process

1968 SHIPPING DOCUMENT.exe
1512 SHIPPING DOCUMENT.exe
1512 SHIPPING DOCUMENT.exe
1512 SHIPPING DOCUMENT.exe
1592 cmstp.exe
1592 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SHIPPING DOCUMENT.execmstp.exe

description pid process

Token: SeDebugPrivilege 1512 SHIPPING DOCUMENT.exe
Token: SeDebugPrivilege 1592 cmstp.exe
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

1392 Explorer.EXE

pid	process
1392	Explorer.EXE

pid	process
1968	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1512	SHIPPING DOCUMENT.exe
1592	cmstp.exe
1592	cmstp.exe

description	pid	process
Token: SeDebugPrivilege	1512	SHIPPING DOCUMENT.exe
Token: SeDebugPrivilege	1592	cmstp.exe

pid	process
1392	Explorer.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

SHIPPING DOCUMENT.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1968 wrote to memory of 1512	1968	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1968 wrote to memory of 1512	1968	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1968 wrote to memory of 1512	1968	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1968 wrote to memory of 1512	1968	SHIPPING DOCUMENT.exe	SHIPPING DOCUMENT.exe
PID 1392 wrote to memory of 1592	1392	Explorer.EXE	cmstp.exe
PID 1392 wrote to memory of 1592	1392	Explorer.EXE	cmstp.exe
PID 1392 wrote to memory of 1592	1392	Explorer.EXE	cmstp.exe
PID 1592 wrote to memory of 3144	1592	cmstp.exe	cmd.exe
PID 1592 wrote to memory of 3144	1592	cmstp.exe	cmd.exe
PID 1592 wrote to memory of 3144	1592	cmstp.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe
  "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
  2⤵
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe
    "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1512
- 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:1592
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\SHIPPING DOCUMENT.exe"
    3⤵
    PID:3144

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nso42E.tmp\yg69z2kr0.dll

MD5
cf41dfdbe7d97c55ed8f185286d3c113

SHA1
4113c1310169af016c663b562bc6a65c60a9618a

SHA256
7f2094ea72a8f87da7b2291f0093567b6ba766442f024b5be3f81ade371e7c22

SHA512
2c034c004deb528d8c417781e5f786cf45ff66651662a524b37dab11a6b7616cfc3009daa1e8749d6c0255fed3f89d63956ff441653293467a68758803f1dd3f

Download Submit
memory/1392-127-0x0000000002B40000-0x0000000002BFD000-memory.dmp

Filesize
756KB

Download
memory/1392-120-0x0000000005390000-0x0000000005519000-memory.dmp

Filesize
1.5MB

Download
memory/1512-115-0x000000000041EAF0-mapping.dmp

Download
memory/1512-117-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1512-118-0x0000000000A10000-0x0000000000D30000-memory.dmp

Filesize
3.1MB

Download
memory/1512-119-0x00000000009E0000-0x00000000009F4000-memory.dmp

Filesize
80KB

Download
memory/1592-124-0x0000000002FD0000-0x0000000002FFE000-memory.dmp

Filesize
184KB

Download
memory/1592-121-0x0000000000000000-mapping.dmp

Download
memory/1592-123-0x0000000000360000-0x0000000000376000-memory.dmp

Filesize
88KB

Download
memory/1592-125-0x0000000004700000-0x0000000004A20000-memory.dmp

Filesize
3.1MB

Download
memory/1592-126-0x0000000004AC0000-0x0000000004B53000-memory.dmp

Filesize
588KB

Download
memory/1968-116-0x00000000009C0000-0x00000000009E3000-memory.dmp

Filesize
140KB

Download
memory/3144-122-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads