formbook | f3b98621548b57b52981311a22c4b06c3644047b6bfaf01ad34467a0223fa71b

General

Target

0000876556789NMV.exe
Size

739KB
MD5

0264f957e00b1c3073570ee312fdb266
SHA1

db0eed50de0bf03b685681cddc01e85430245fe9
SHA256

f3b98621548b57b52981311a22c4b06c3644047b6bfaf01ad34467a0223fa71b
SHA512

7db312e269114be4cb9ee1bf03bdf4d0c092d6d91137e934f6e60cc71585616046fb93537fe0effb690216124b70a1c51375a3c6e02e251707eb48adfd710e14

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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

Xloader payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1732-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1732-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1732-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2036-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/2036-77-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader

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:

0000876556789NMV.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084403625-2215941253-1760665084-1000\Control Panel\International\Geo\Nation	0000876556789NMV.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

888 cmd.exe

pid	process
888	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\OZTP_RBPT = "C:\\Program Files (x86)\\Gmbi4508\\ms2d-.exe"	mstsc.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

0000876556789NMV.exe0000876556789NMV.exemstsc.exe

description	pid	process	target process
PID 1880 set thread context of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1732 set thread context of 1212	1732	0000876556789NMV.exe	Explorer.EXE
PID 2036 set thread context of 1212	2036	mstsc.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

mstsc.exe

description ioc process

File opened for modification C:\Program Files (x86)\Gmbi4508\ms2d-.exe mstsc.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Gmbi4508\ms2d-.exe	mstsc.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4084403625-2215941253-1760665084-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

0000876556789NMV.exe0000876556789NMV.exemstsc.exe

pid	process
1880	0000876556789NMV.exe
1732	0000876556789NMV.exe
1732	0000876556789NMV.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

0000876556789NMV.exemstsc.exe

pid process

1732 0000876556789NMV.exe
1732 0000876556789NMV.exe
1732 0000876556789NMV.exe
2036 mstsc.exe
2036 mstsc.exe
2036 mstsc.exe
2036 mstsc.exe

pid	process
1732	0000876556789NMV.exe
1732	0000876556789NMV.exe
1732	0000876556789NMV.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe
2036	mstsc.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

0000876556789NMV.exe0000876556789NMV.exemstsc.exe

description	pid	process
Token: SeDebugPrivilege	1880	0000876556789NMV.exe
Token: SeDebugPrivilege	1732	0000876556789NMV.exe
Token: SeDebugPrivilege	2036	mstsc.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 20 IoCs

Processes:

0000876556789NMV.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1880 wrote to memory of 1732	1880	0000876556789NMV.exe	0000876556789NMV.exe
PID 1212 wrote to memory of 2036	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 2036	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 2036	1212	Explorer.EXE	mstsc.exe
PID 1212 wrote to memory of 2036	1212	Explorer.EXE	mstsc.exe
PID 2036 wrote to memory of 888	2036	mstsc.exe	cmd.exe
PID 2036 wrote to memory of 888	2036	mstsc.exe	cmd.exe
PID 2036 wrote to memory of 888	2036	mstsc.exe	cmd.exe
PID 2036 wrote to memory of 888	2036	mstsc.exe	cmd.exe
PID 2036 wrote to memory of 748	2036	mstsc.exe	Firefox.exe
PID 2036 wrote to memory of 748	2036	mstsc.exe	Firefox.exe
PID 2036 wrote to memory of 748	2036	mstsc.exe	Firefox.exe
PID 2036 wrote to memory of 748	2036	mstsc.exe	Firefox.exe
PID 2036 wrote to memory of 748	2036	mstsc.exe	Firefox.exe

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

C:\Users\Admin\AppData\Local\Temp\0000876556789NMV.exe
"C:\Users\Admin\AppData\Local\Temp\0000876556789NMV.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1880

C:\Users\Admin\AppData\Local\Temp\0000876556789NMV.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1732

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Adds 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:2036

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\0000876556789NMV.exe"
3⤵
- Deletes itself
PID:888

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:748

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

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/888-71-0x0000000000000000-mapping.dmp

Download
memory/1212-68-0x0000000006060000-0x00000000061C7000-memory.dmp

Filesize
1.4MB

Download
memory/1212-78-0x0000000002A00000-0x0000000002B1F000-memory.dmp

Filesize
1.1MB

Download
memory/1212-76-0x0000000002A00000-0x0000000002B1F000-memory.dmp

Filesize
1.1MB

Download
memory/1732-66-0x0000000000770000-0x0000000000A73000-memory.dmp

Filesize
3.0MB

Download
memory/1732-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1732-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1732-63-0x000000000041F6F0-mapping.dmp

Download
memory/1732-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1732-67-0x00000000002A0000-0x00000000002B1000-memory.dmp

Filesize
68KB

Download
memory/1732-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1880-56-0x0000000000250000-0x000000000025A000-memory.dmp

Filesize
40KB

Download
memory/1880-54-0x0000000001130000-0x00000000011F0000-memory.dmp

Filesize
768KB

Download
memory/1880-58-0x0000000000890000-0x00000000008C2000-memory.dmp

Filesize
200KB

Download
memory/1880-57-0x0000000004E70000-0x0000000004EF6000-memory.dmp

Filesize
536KB

Download
memory/1880-55-0x0000000075C41000-0x0000000075C43000-memory.dmp

Filesize
8KB

Download
memory/2036-69-0x0000000000000000-mapping.dmp

Download
memory/2036-74-0x0000000002140000-0x0000000002443000-memory.dmp

Filesize
3.0MB

Download
memory/2036-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/2036-75-0x0000000001F60000-0x0000000001FF0000-memory.dmp

Filesize
576KB

Download
memory/2036-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/2036-72-0x00000000003C0000-0x00000000004C4000-memory.dmp

Filesize
1.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads