formbook | cd48b7342c019916ab0938911da0dfdd7ed997696cab114faf92f5fcab855e69

General

Target

PI009878.exe
Size

1.0MB
MD5

ea98d369409798d8bbc815bf626b1d45
SHA1

bb4ccc4e8bf2bfd97857e5ba2cb98f1a9965de03
SHA256

cd48b7342c019916ab0938911da0dfdd7ed997696cab114faf92f5fcab855e69
SHA512

5d560a92393f8b495799cbf7c97b8c24e8240c9ecdd16486687b20641648d043a1b15304a203410d4d0045046ea9f6b6534c0071cf0a90b65eec92053ec9f08e
SSDEEP

24576:jDpckMRAONgaw/OTPK+RTpOLS60FDVMEjr:npc3R5w4ycIAhH

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

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==

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/860-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/860-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/860-69-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/580-73-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader
behavioral1/memory/580-77-0x0000000000080000-0x00000000000AC000-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:

raserver.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JV1HBHX8_ = "C:\\Program Files (x86)\\Zz4dtqvah\\msrfitq6.exe"	raserver.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:

PI009878.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\International\Geo\Nation PI009878.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2040 cmd.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Control Panel\International\Geo\Nation	PI009878.exe

pid	process
2040	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PI009878.exePI009878.exeraserver.exe

description	pid	process	target process
PID 1724 set thread context of 860	1724	PI009878.exe	PI009878.exe
PID 860 set thread context of 1284	860	PI009878.exe	Explorer.EXE
PID 580 set thread context of 1284	580	raserver.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

raserver.exe

description ioc process

File opened for modification C:\Program Files (x86)\Zz4dtqvah\msrfitq6.exe raserver.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Zz4dtqvah\msrfitq6.exe	raserver.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Processes:

PI009878.exePI009878.exeraserver.exe

pid	process
1724	PI009878.exe
860	PI009878.exe
860	PI009878.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1284 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

PI009878.exeraserver.exe

pid process

860 PI009878.exe
860 PI009878.exe
860 PI009878.exe
580 raserver.exe
580 raserver.exe
580 raserver.exe
580 raserver.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PI009878.exePI009878.exeraserver.exe

description pid process

Token: SeDebugPrivilege 1724 PI009878.exe
Token: SeDebugPrivilege 860 PI009878.exe
Token: SeDebugPrivilege 580 raserver.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1284 Explorer.EXE
1284 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1284 Explorer.EXE
1284 Explorer.EXE

pid	process
1284	Explorer.EXE

pid	process
860	PI009878.exe
860	PI009878.exe
860	PI009878.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe
580	raserver.exe

description	pid	process
Token: SeDebugPrivilege	1724	PI009878.exe
Token: SeDebugPrivilege	860	PI009878.exe
Token: SeDebugPrivilege	580	raserver.exe

pid	process
1284	Explorer.EXE
1284	Explorer.EXE

pid	process
1284	Explorer.EXE
1284	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PI009878.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1724 wrote to memory of 860	1724	PI009878.exe	PI009878.exe
PID 1284 wrote to memory of 580	1284	Explorer.EXE	raserver.exe
PID 1284 wrote to memory of 580	1284	Explorer.EXE	raserver.exe
PID 1284 wrote to memory of 580	1284	Explorer.EXE	raserver.exe
PID 1284 wrote to memory of 580	1284	Explorer.EXE	raserver.exe
PID 580 wrote to memory of 2040	580	raserver.exe	cmd.exe
PID 580 wrote to memory of 2040	580	raserver.exe	cmd.exe
PID 580 wrote to memory of 2040	580	raserver.exe	cmd.exe
PID 580 wrote to memory of 2040	580	raserver.exe	cmd.exe
PID 580 wrote to memory of 1924	580	raserver.exe	Firefox.exe
PID 580 wrote to memory of 1924	580	raserver.exe	Firefox.exe
PID 580 wrote to memory of 1924	580	raserver.exe	Firefox.exe
PID 580 wrote to memory of 1924	580	raserver.exe	Firefox.exe
PID 580 wrote to memory of 1924	580	raserver.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1284

C:\Users\Admin\AppData\Local\Temp\PI009878.exe
"C:\Users\Admin\AppData\Local\Temp\PI009878.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1724

C:\Users\Admin\AppData\Local\Temp\PI009878.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:860

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.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:580

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PI009878.exe"
3⤵
- Deletes itself
PID:2040

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1924

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/580-68-0x0000000000000000-mapping.dmp

Download
memory/580-77-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/580-75-0x00000000021F0000-0x0000000002280000-memory.dmp

Filesize
576KB

Download
memory/580-74-0x0000000001EE0000-0x00000000021E3000-memory.dmp

Filesize
3.0MB

Download
memory/580-73-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/580-72-0x00000000007A0000-0x00000000007BC000-memory.dmp

Filesize
112KB

Download
memory/860-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/860-69-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/860-63-0x000000000041F6F0-mapping.dmp

Download
memory/860-65-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/860-66-0x0000000000280000-0x0000000000291000-memory.dmp

Filesize
68KB

Download
memory/860-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/860-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1284-67-0x0000000006B70000-0x0000000006CBD000-memory.dmp

Filesize
1.3MB

Download
memory/1284-76-0x0000000005F90000-0x00000000060BA000-memory.dmp

Filesize
1.2MB

Download
memory/1284-78-0x0000000005F90000-0x00000000060BA000-memory.dmp

Filesize
1.2MB

Download
memory/1724-54-0x0000000001000000-0x000000000110C000-memory.dmp

Filesize
1.0MB

Download
memory/1724-58-0x0000000004510000-0x0000000004584000-memory.dmp

Filesize
464KB

Download
memory/1724-57-0x0000000005D90000-0x0000000005E54000-memory.dmp

Filesize
784KB

Download
memory/1724-56-0x0000000000480000-0x00000000004A0000-memory.dmp

Filesize
128KB

Download
memory/1724-55-0x0000000074DC1000-0x0000000074DC3000-memory.dmp

Filesize
8KB

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

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads