formbook | 7077dc6b11200f419f78a5768af01a0134dbb398c70e373ddd5e5ba5f583472b

General

Target

Contract Documents.exe
Size

344KB
MD5

376d7e1871d7d432b255403e399e6334
SHA1

a2a852627172066b3fbd344abdb3aa985ec35b47
SHA256

6348a886a9796d2fa05cd1792d8299c1a3a66e016b04a115e34c47d49415714d
SHA512

2bd6de7794a465193331a590145c5422ba6ec607b4ec4b98662302e8d7763d41971ee5e84c92052f056a1b8b0584461d99db7cf81b457df08f6d7ef2d5e8436b

Score

10^/10

formbook nfl coreentity rat rezer0 spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

3.9

Campaign

nfl

Decoy

giacamp.net

qb51.party

mashalevine.com

russiasexdating.com

jitangyy.com

morockin.com

karoreiss.com

tractionhero.today

bienvenueenprovence.net

stormharbour.info

61999h.com

tryandcert.com

bestwaytosuccess.com

laobaochang.com

otomatiktente.com

rehpb.info

ivpdqb.info

dc-wv-wv-ie-q.com

goingmagic.com

cimachain.com

Signatures

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/800-56-0x00000000004F0000-0x00000000004F8000-memory.dmp	coreentity

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/1284-63-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/1284-64-0x000000000041B620-mapping.dmp	formbook
behavioral1/memory/1284-66-0x0000000000400000-0x000000000042A000-memory.dmp	formbook
behavioral1/memory/964-74-0x0000000000080000-0x00000000000AA000-memory.dmp	formbook

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/800-57-0x00000000045F0000-0x0000000004628000-memory.dmp	rezer0

Suspicious use of SetThreadContext 3 IoCs

Processes:

Contract Documents.exeRegSvcs.exemstsc.exe

description	pid	process	target process
PID 800 set thread context of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 1284 set thread context of 1212	1284	RegSvcs.exe	Explorer.EXE
PID 964 set thread context of 1212	964	mstsc.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

836 schtasks.exe

pid	process
836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

Contract Documents.exeRegSvcs.exemstsc.exe

pid	process
800	Contract Documents.exe
1284	RegSvcs.exe
1284	RegSvcs.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe
964	mstsc.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exemstsc.exe

pid process

1284 RegSvcs.exe
1284 RegSvcs.exe
1284 RegSvcs.exe
964 mstsc.exe
964 mstsc.exe

pid	process
1284	RegSvcs.exe
1284	RegSvcs.exe
1284	RegSvcs.exe
964	mstsc.exe
964	mstsc.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Contract Documents.exeRegSvcs.exemstsc.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	800	Contract Documents.exe
Token: SeDebugPrivilege	1284	RegSvcs.exe
Token: SeDebugPrivilege	964	mstsc.exe
Token: SeShutdownPrivilege	1212	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1212 Explorer.EXE
1212 Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

pid	process
1212	Explorer.EXE
1212	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

Contract Documents.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 800 wrote to memory of 836	800	Contract Documents.exe	schtasks.exe
PID 800 wrote to memory of 836	800	Contract Documents.exe	schtasks.exe
PID 800 wrote to memory of 836	800	Contract Documents.exe	schtasks.exe
PID 800 wrote to memory of 836	800	Contract Documents.exe	schtasks.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 800 wrote to memory of 1284	800	Contract Documents.exe	RegSvcs.exe
PID 1212 wrote to memory of 964	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 964	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 964	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 964	1212	Explorer.EXE	mstsc.exe
PID 964 wrote to memory of 900	964	mstsc.exe	cmd.exe
PID 964 wrote to memory of 900	964	mstsc.exe	cmd.exe
PID 964 wrote to memory of 900	964	mstsc.exe	cmd.exe
PID 964 wrote to memory of 900	964	mstsc.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\Contract Documents.exe
"C:\Users\Admin\AppData\Local\Temp\Contract Documents.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:800

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\TSOKGNOdzysi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp71E6.tmp"
2⤵
- Creates scheduled task(s)
PID:836

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1284

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1212

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:900

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\tmp71E6.tmp
Filesize
1KB

MD5
b164df0d5d271ed4e95a90f48174f881

SHA1
1ade4fdfc40289386ebad8bc8647f2f0caf76899

SHA256
7e293bb1aa2318148d56f09a0a1540633dece416edc93387f3de9c6efbe65b55

SHA512
ac5b4bbc54b4ec07c273c4d2e011d1bd14d650ff8614e279d05ceeb56255b63fe9522dff8eb62524ef82351da22fdf07866b34ffd9551e82deb17ea05fcbd260

Download Submit
memory/800-54-0x00000000103B0000-0x000000001040A000-memory.dmp

Filesize
360KB

Download
memory/800-55-0x00000000765F1000-0x00000000765F3000-memory.dmp

Filesize
8KB

Download
memory/800-56-0x00000000004F0000-0x00000000004F8000-memory.dmp

Filesize
32KB

Download
memory/800-57-0x00000000045F0000-0x0000000004628000-memory.dmp

Filesize
224KB

Download
memory/836-58-0x0000000000000000-mapping.dmp

Download
memory/900-72-0x0000000000000000-mapping.dmp

Download
memory/964-70-0x0000000000000000-mapping.dmp

Download
memory/964-76-0x0000000000A20000-0x0000000000AB3000-memory.dmp

Filesize
588KB

Download
memory/964-75-0x00000000022D0000-0x00000000025D3000-memory.dmp

Filesize
3.0MB

Download
memory/964-74-0x0000000000080000-0x00000000000AA000-memory.dmp

Filesize
168KB

Download
memory/964-73-0x0000000000DC0000-0x0000000000EC4000-memory.dmp

Filesize
1.0MB

Download
memory/1212-69-0x0000000004B30000-0x0000000004CC3000-memory.dmp

Filesize
1.6MB

Download
memory/1212-77-0x0000000003DD0000-0x0000000003EDB000-memory.dmp

Filesize
1.0MB

Download
memory/1284-61-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1284-68-0x00000000002C0000-0x00000000002D4000-memory.dmp

Filesize
80KB

Download
memory/1284-60-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1284-67-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1284-66-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/1284-64-0x000000000041B620-mapping.dmp

Download
memory/1284-63-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads