formbook | 3f37e123258dcf5b2a18a1ba8299f21ddb6fa585db1dac3a957022d7c763a184

General

Target

Shipping Docs.exe
Size

944KB
MD5

1c7c7a3b0cfb41627125bb609863675a
SHA1

83a9b9eec6dcc897b1406b7ca166e40c33f58d3d
SHA256

3f37e123258dcf5b2a18a1ba8299f21ddb6fa585db1dac3a957022d7c763a184
SHA512

d2b455fb31994cf79fe7d198917382822d772f95b00c913683ff539c351b36ae85c2545b163e934cca8282435650446d24e3614bc283486b9dfd49d7e636ec5b

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

C2

http://w��5 �@q[*��S=��m

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
behavioral2/memory/2712-117-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2712-118-0x000000000041EAC0-mapping.dmp	formbook
behavioral2/memory/2712-121-0x0000000000D00000-0x0000000000DAE000-memory.dmp	formbook
behavioral2/memory/1304-125-0x0000000000540000-0x000000000056E000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

Shipping Docs.exeShipping Docs.exechkdsk.exe

description	pid	process	target process
PID 900 set thread context of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 2712 set thread context of 3024	2712	Shipping Docs.exe	Explorer.EXE
PID 1304 set thread context of 3024	1304	chkdsk.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

3800 schtasks.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

pid	process
3800	schtasks.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

Shipping Docs.exeShipping Docs.exechkdsk.exe

pid	process
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
900	Shipping Docs.exe
2712	Shipping Docs.exe
2712	Shipping Docs.exe
2712	Shipping Docs.exe
2712	Shipping Docs.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe
1304	chkdsk.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Shipping Docs.exechkdsk.exe

pid process

2712 Shipping Docs.exe
2712 Shipping Docs.exe
2712 Shipping Docs.exe
1304 chkdsk.exe
1304 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

Shipping Docs.exeShipping Docs.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 900 Shipping Docs.exe
Token: SeDebugPrivilege 2712 Shipping Docs.exe
Token: SeDebugPrivilege 1304 chkdsk.exe

pid	process
2712	Shipping Docs.exe
2712	Shipping Docs.exe
2712	Shipping Docs.exe
1304	chkdsk.exe
1304	chkdsk.exe

description	pid	process
Token: SeDebugPrivilege	900	Shipping Docs.exe
Token: SeDebugPrivilege	2712	Shipping Docs.exe
Token: SeDebugPrivilege	1304	chkdsk.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Shipping Docs.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 900 wrote to memory of 3800	900	Shipping Docs.exe	schtasks.exe
PID 900 wrote to memory of 3800	900	Shipping Docs.exe	schtasks.exe
PID 900 wrote to memory of 3800	900	Shipping Docs.exe	schtasks.exe
PID 900 wrote to memory of 1484	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 1484	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 1484	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2680	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2680	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2680	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 900 wrote to memory of 2712	900	Shipping Docs.exe	Shipping Docs.exe
PID 3024 wrote to memory of 1304	3024	Explorer.EXE	chkdsk.exe
PID 3024 wrote to memory of 1304	3024	Explorer.EXE	chkdsk.exe
PID 3024 wrote to memory of 1304	3024	Explorer.EXE	chkdsk.exe
PID 1304 wrote to memory of 888	1304	chkdsk.exe	cmd.exe
PID 1304 wrote to memory of 888	1304	chkdsk.exe	cmd.exe
PID 1304 wrote to memory of 888	1304	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3024

C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:900

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vLcIzJDan" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2893.tmp"
3⤵
- Creates scheduled task(s)
PID:3800

C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe"
3⤵
PID:1484

C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe"
3⤵
PID:2680

C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe
"C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2712

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1304

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Shipping Docs.exe"
3⤵
PID:888

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

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2893.tmp
MD5
8cb960d7c9d01cf8d1ac206ec0432607

SHA1
d9577ffa24f9d7135de5550baae29705917bc110

SHA256
01f60839eb3e68a29c1d562f98ad468180fc4308c4d7723c7e39c8484b469fdf

SHA512
dd3ed1434dcd2818c49930acc7e58a248a05fe50acfb09356d150eca64712363085d0a951d4ec91602bbb0c866480ef57d2f1751e7b0c6ebc5871c193a434cb5

Download Submit
memory/888-126-0x0000000000000000-mapping.dmp

Download
memory/900-114-0x0000000001310000-0x0000000001311000-memory.dmp

Filesize
4KB

Download
memory/1304-123-0x0000000000000000-mapping.dmp

Download
memory/1304-128-0x0000000004E60000-0x0000000004EF3000-memory.dmp

Filesize
588KB

Download
memory/1304-127-0x0000000004F90000-0x00000000052B0000-memory.dmp

Filesize
3.1MB

Download
memory/1304-125-0x0000000000540000-0x000000000056E000-memory.dmp

Filesize
184KB

Download
memory/1304-124-0x00000000008D0000-0x00000000008DA000-memory.dmp

Filesize
40KB

Download
memory/2712-117-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2712-121-0x0000000000D00000-0x0000000000DAE000-memory.dmp

Filesize
696KB

Download
memory/2712-120-0x00000000013B0000-0x00000000016D0000-memory.dmp

Filesize
3.1MB

Download
memory/2712-118-0x000000000041EAC0-mapping.dmp

Download
memory/3024-122-0x0000000004DA0000-0x0000000004EB3000-memory.dmp

Filesize
1.1MB

Download
memory/3024-129-0x0000000005E30000-0x0000000005FA8000-memory.dmp

Filesize
1.5MB

Download
memory/3800-115-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads