formbook | 4fe26ebfc5412205231040de3bf8f865da141f2c9c5c2c809e4bf6ceced43e55

General

Target

triage_dropped_file.exe
Size

798KB
MD5

fa6cb9677ff2254615166747668a72ed
SHA1

e784bfd8f5f4514569205bb535ed8bc36ab47f28
SHA256

4fe26ebfc5412205231040de3bf8f865da141f2c9c5c2c809e4bf6ceced43e55
SHA512

e6e05225ecbf3e0157bc5b55980c17a7e9f61d36aadb172ae753b140c69b10f3e58d3a020e4225a25596b7aae586409e7c59e4ab2046e134ce5ccfc281484617

Score

10^/10

formbook xloader be4o loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

be4o

Decoy

laboratoriobioixcha.com

tictocperushop.online

wild-oceans.com

belaruscountry.com

kicktmall.com

fitcoinweb.tech

mores.one

gogear.one

gxrcksy.com

samrcq.com

impossible-icecream.com

bravesxx.com

bookchainart.com

sleepsolutionsofmboro.com

ocbrazilbusinessclub.com

advisor76.xyz

xitaotech.com

mgsdtytifgf3414.xyz

johnson-brown.net

cr3drt.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1524-60-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1524-61-0x000000000041F270-mapping.dmp	xloader
behavioral1/memory/1524-68-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/2028-75-0x0000000000090000-0x00000000000BB000-memory.dmp	xloader
behavioral1/memory/2028-81-0x0000000000090000-0x00000000000BB000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DTK06TYXRT = "C:\\Program Files (x86)\\Nkptdv418\\audiodgsdf0d.exe"	cmmon32.exe

Executes dropped EXE 1 IoCs

Processes:

audiodgsdf0d.exe

pid process

580 audiodgsdf0d.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
580	audiodgsdf0d.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

triage_dropped_file.exevbc.execmmon32.exe

description	pid	process	target process
PID 1936 set thread context of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1524 set thread context of 1320	1524	vbc.exe	Explorer.EXE
PID 2028 set thread context of 1320	2028	cmmon32.exe	Explorer.EXE

Drops file in Program Files directory 2 IoCs

Processes:

Explorer.EXEcmmon32.exe

description	ioc	process
File created	C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1819626980-2277161760-1023733287-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

Processes:

vbc.execmmon32.exe

pid	process
1524	vbc.exe
1524	vbc.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe
2028	cmmon32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

vbc.execmmon32.exe

pid process

1524 vbc.exe
1524 vbc.exe
1524 vbc.exe
2028 cmmon32.exe
2028 cmmon32.exe
2028 cmmon32.exe
2028 cmmon32.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

vbc.exeExplorer.EXEcmmon32.exe

description	pid	process
Token: SeDebugPrivilege	1524	vbc.exe
Token: SeShutdownPrivilege	1320	Explorer.EXE
Token: SeShutdownPrivilege	1320	Explorer.EXE
Token: SeDebugPrivilege	2028	cmmon32.exe
Token: SeShutdownPrivilege	1320	Explorer.EXE
Token: SeShutdownPrivilege	1320	Explorer.EXE
Token: SeShutdownPrivilege	1320	Explorer.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1320 Explorer.EXE
1320 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1320 Explorer.EXE
1320 Explorer.EXE

pid	process
1320	Explorer.EXE
1320	Explorer.EXE

pid	process
1320	Explorer.EXE
1320	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

triage_dropped_file.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1936 wrote to memory of 1524	1936	triage_dropped_file.exe	vbc.exe
PID 1320 wrote to memory of 2028	1320	Explorer.EXE	cmmon32.exe
PID 1320 wrote to memory of 2028	1320	Explorer.EXE	cmmon32.exe
PID 1320 wrote to memory of 2028	1320	Explorer.EXE	cmmon32.exe
PID 1320 wrote to memory of 2028	1320	Explorer.EXE	cmmon32.exe
PID 2028 wrote to memory of 1968	2028	cmmon32.exe	cmd.exe
PID 2028 wrote to memory of 1968	2028	cmmon32.exe	cmd.exe
PID 2028 wrote to memory of 1968	2028	cmmon32.exe	cmd.exe
PID 2028 wrote to memory of 1968	2028	cmmon32.exe	cmd.exe
PID 2028 wrote to memory of 1412	2028	cmmon32.exe	Firefox.exe
PID 2028 wrote to memory of 1412	2028	cmmon32.exe	Firefox.exe
PID 2028 wrote to memory of 1412	2028	cmmon32.exe	Firefox.exe
PID 2028 wrote to memory of 1412	2028	cmmon32.exe	Firefox.exe
PID 2028 wrote to memory of 1412	2028	cmmon32.exe	Firefox.exe
PID 1320 wrote to memory of 580	1320	Explorer.EXE	audiodgsdf0d.exe
PID 1320 wrote to memory of 580	1320	Explorer.EXE	audiodgsdf0d.exe
PID 1320 wrote to memory of 580	1320	Explorer.EXE	audiodgsdf0d.exe
PID 1320 wrote to memory of 580	1320	Explorer.EXE	audiodgsdf0d.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1320

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1936

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1524

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2028

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:1968

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1412

C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe
"C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe"
2⤵
- Executes dropped EXE
PID:580

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Scripting

1

T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe
Filesize
2.6MB

MD5
5c860d77dcf4f07790ecb1b78535d7ab

SHA1
9338fcda335809cdae3706d2e19a505ff12f86e2

SHA256
2fb352b83a8ff1303dd02800a6d2e27d5bc8316d241040dc71168318b2f6d69a

SHA512
0cc81a1e6c3b5f5f3fa30dd8a102eb6106b01d3dc8cb4f4225cf1c9de72e5022a6c32e318e02e81f231e53cc008f5f066cf0eeb0ef8e6e1242de990a129d1a1c

Download Submit
C:\Program Files (x86)\Nkptdv418\audiodgsdf0d.exe
Filesize
2.6MB

MD5
5c860d77dcf4f07790ecb1b78535d7ab

SHA1
9338fcda335809cdae3706d2e19a505ff12f86e2

SHA256
2fb352b83a8ff1303dd02800a6d2e27d5bc8316d241040dc71168318b2f6d69a

SHA512
0cc81a1e6c3b5f5f3fa30dd8a102eb6106b01d3dc8cb4f4225cf1c9de72e5022a6c32e318e02e81f231e53cc008f5f066cf0eeb0ef8e6e1242de990a129d1a1c

Download Submit
memory/580-83-0x0000000000000000-mapping.dmp

Download
memory/1320-79-0x00000000070B0000-0x00000000071DC000-memory.dmp

Filesize
1.2MB

Download
memory/1320-82-0x00000000070B0000-0x00000000071DC000-memory.dmp

Filesize
1.2MB

Download
memory/1320-73-0x0000000006490000-0x00000000065C6000-memory.dmp

Filesize
1.2MB

Download
memory/1524-66-0x00000000001B0000-0x00000000001C1000-memory.dmp

Filesize
68KB

Download
memory/1524-69-0x00000000024A0000-0x00000000027A3000-memory.dmp

Filesize
3.0MB

Download
memory/1524-56-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1524-57-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1524-61-0x000000000041F270-mapping.dmp

Download
memory/1524-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1524-68-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1936-62-0x000007FEF3F00000-0x000007FEF5488000-memory.dmp

Filesize
21.5MB

Download
memory/1936-54-0x0000000000DB0000-0x0000000000E7C000-memory.dmp

Filesize
816KB

Download
memory/1936-71-0x000007FEF2180000-0x000007FEF30CD000-memory.dmp

Filesize
15.3MB

Download
memory/1936-72-0x000007FEEE5B0000-0x000007FEEF000000-memory.dmp

Filesize
10.3MB

Download
memory/1936-59-0x000007FEF3F00000-0x000007FEF5488000-memory.dmp

Filesize
21.5MB

Download
memory/1936-65-0x000007FEF32C0000-0x000007FEF3EFF000-memory.dmp

Filesize
12.2MB

Download
memory/1936-64-0x000007FEF30D0000-0x000007FEF32B8000-memory.dmp

Filesize
1.9MB

Download
memory/1936-55-0x0000000000460000-0x0000000000496000-memory.dmp

Filesize
216KB

Download
memory/1936-80-0x000007FEEE5B0000-0x000007FEEF000000-memory.dmp

Filesize
10.3MB

Download
memory/1968-70-0x0000000000000000-mapping.dmp

Download
memory/2028-78-0x0000000001D50000-0x0000000001DE0000-memory.dmp

Filesize
576KB

Download
memory/2028-77-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/2028-81-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/2028-76-0x0000000001E90000-0x0000000002193000-memory.dmp

Filesize
3.0MB

Download
memory/2028-75-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/2028-74-0x0000000000060000-0x000000000006D000-memory.dmp

Filesize
52KB

Download
memory/2028-67-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads