formbook | e37b466a994825e7a44f625de253fc03dedd0d042127b035423f5dd2370d2f77

General

Target

Heineken_902738.exe
Size

753KB
MD5

7901c752f39af02c460c45bb8c056578
SHA1

c4afb3557c24fe5e8eb4f163ff3d2f8d08a76b24
SHA256

e37b466a994825e7a44f625de253fc03dedd0d042127b035423f5dd2370d2f77
SHA512

61b8f79757a7d6e61e21bc7773c9ae4f2db7fa24175cd5b7d91e3f277bb59d4cff69888ff3c23d801d19cef97b38e7a772c580d8eee832112b8849cfbbdfe85b

Score

10^/10

formbook xloader nekq loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

nekq

Decoy

/c9oNOPSc9aX85OuoqU=

OJ273U/T/c7no1jC

oPn68XFXJsCG6JOuoqU=

iAUbpb8k0vTRkUTK

pPasgiv9XQi4ESRJKCjRfGdj

J5jO/Yz6+M7no1jC

XdhiI9HBZsZlyKZ1jPx+JvxZEg==

uKpYHaMJ+OCnb0yGJ5d4Fg==

9/aD58LBdIIAdGJIaaiSTSuqn1/A

Q52txESw1ro3n3NlouzWgmgm06DFAvFR

nv0k5OdLOI8bBbwMrO7Lp059Fw==

NJ3N6nHo3qKAhDZJKCjRfGdj

z0FFAyMlzFonbTkMu79n

IxOiRvLolOiHw2lEcphyDfqqn1/A

Pi0Kkdu8Vr84Fg==

hGmJW4f0Eelq7fRazg3f1qZr

+O+SUb0HHflx55l0J5d4Fg==

raG3zxXI4rgz6Ipsia0=

OZuQHihvYzPayG4Ax70=

EYKIJDSGpYffFZOuoqU=

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/1228-63-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1228-64-0x000000000041F670-mapping.dmp	xloader
behavioral1/memory/1228-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2036-73-0x0000000000070000-0x000000000009C000-memory.dmp	xloader
behavioral1/memory/2036-77-0x0000000000070000-0x000000000009C000-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:

cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\OBCDU = "C:\\Program Files (x86)\\Jolrxi\\regsvcfnu.exe"	cscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Heineken_902738.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	Heineken_902738.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2040 cmd.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

pid	process
2040	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Heineken_902738.exeHeineken_902738.execscript.exe

description	pid	process	target process
PID 1528 set thread context of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1228 set thread context of 1208	1228	Heineken_902738.exe	Explorer.EXE
PID 2036 set thread context of 1208	2036	cscript.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cscript.exe

description ioc process

File opened for modification C:\Program Files (x86)\Jolrxi\regsvcfnu.exe cscript.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Jolrxi\regsvcfnu.exe	cscript.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cscript.exe

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

Suspicious behavior: EnumeratesProcesses 17 IoCs

Processes:

Heineken_902738.execscript.exe

pid	process
1228	Heineken_902738.exe
1228	Heineken_902738.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe
2036	cscript.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Heineken_902738.execscript.exe

pid process

1228 Heineken_902738.exe
1228 Heineken_902738.exe
1228 Heineken_902738.exe
2036 cscript.exe
2036 cscript.exe
2036 cscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Heineken_902738.execscript.exe

description pid process

Token: SeDebugPrivilege 1228 Heineken_902738.exe
Token: SeDebugPrivilege 2036 cscript.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1208 Explorer.EXE
1208 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1228	Heineken_902738.exe
Token: SeDebugPrivilege	2036	cscript.exe

pid	process
1208	Explorer.EXE
1208	Explorer.EXE

pid	process
1208	Explorer.EXE
1208	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

Heineken_902738.exeExplorer.EXEcscript.exe

description	pid	process	target process
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1528 wrote to memory of 1228	1528	Heineken_902738.exe	Heineken_902738.exe
PID 1208 wrote to memory of 2036	1208	Explorer.EXE	cscript.exe
PID 1208 wrote to memory of 2036	1208	Explorer.EXE	cscript.exe
PID 1208 wrote to memory of 2036	1208	Explorer.EXE	cscript.exe
PID 1208 wrote to memory of 2036	1208	Explorer.EXE	cscript.exe
PID 2036 wrote to memory of 2040	2036	cscript.exe	cmd.exe
PID 2036 wrote to memory of 2040	2036	cscript.exe	cmd.exe
PID 2036 wrote to memory of 2040	2036	cscript.exe	cmd.exe
PID 2036 wrote to memory of 2040	2036	cscript.exe	cmd.exe
PID 2036 wrote to memory of 364	2036	cscript.exe	Firefox.exe
PID 2036 wrote to memory of 364	2036	cscript.exe	Firefox.exe
PID 2036 wrote to memory of 364	2036	cscript.exe	Firefox.exe
PID 2036 wrote to memory of 364	2036	cscript.exe	Firefox.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cscript.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cscript.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Local\Temp\Heineken_902738.exe
"C:\Users\Admin\AppData\Local\Temp\Heineken_902738.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1528

C:\Users\Admin\AppData\Local\Temp\Heineken_902738.exe
"C:\Users\Admin\AppData\Local\Temp\Heineken_902738.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1228

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:2012

C:\Windows\SysWOW64\cscript.exe
"C:\Windows\SysWOW64\cscript.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
- System policy modification
PID:2036

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Heineken_902738.exe"
3⤵
- Deletes itself
PID:2040

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:364

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/1208-78-0x0000000005080000-0x00000000051A5000-memory.dmp

Filesize
1.1MB

Download
memory/1208-76-0x0000000005080000-0x00000000051A5000-memory.dmp

Filesize
1.1MB

Download
memory/1208-69-0x0000000004BA0000-0x0000000004D11000-memory.dmp

Filesize
1.4MB

Download
memory/1228-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1228-68-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1228-67-0x0000000000950000-0x0000000000C53000-memory.dmp

Filesize
3.0MB

Download
memory/1228-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1228-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1228-63-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1228-64-0x000000000041F670-mapping.dmp

Download
memory/1528-59-0x0000000004AC0000-0x0000000004B06000-memory.dmp

Filesize
280KB

Download
memory/1528-54-0x00000000011E0000-0x00000000012A2000-memory.dmp

Filesize
776KB

Download
memory/1528-58-0x0000000005D20000-0x0000000005D9C000-memory.dmp

Filesize
496KB

Download
memory/1528-57-0x0000000000580000-0x000000000058A000-memory.dmp

Filesize
40KB

Download
memory/1528-56-0x0000000000570000-0x0000000000586000-memory.dmp

Filesize
88KB

Download
memory/1528-55-0x0000000075391000-0x0000000075393000-memory.dmp

Filesize
8KB

Download
memory/2036-70-0x0000000000000000-mapping.dmp

Download
memory/2036-72-0x00000000001A0000-0x00000000001C2000-memory.dmp

Filesize
136KB

Download
memory/2036-73-0x0000000000070000-0x000000000009C000-memory.dmp

Filesize
176KB

Download
memory/2036-74-0x0000000002260000-0x0000000002563000-memory.dmp

Filesize
3.0MB

Download
memory/2036-75-0x0000000000510000-0x00000000005A0000-memory.dmp

Filesize
576KB

Download
memory/2036-77-0x0000000000070000-0x000000000009C000-memory.dmp

Filesize
176KB

Download
memory/2040-71-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads