formbook | a3d70f4e3daa60d13fb0dcf5b78820b4f6de6e709df0beacf6ca404ec196a3fb

General

Target

tmp.exe
Size

922KB
MD5

28ad0eb6f09a90cf169b528c0bea75a9
SHA1

f350e36fa8d787008104f1ebb6255431d306af5a
SHA256

a3d70f4e3daa60d13fb0dcf5b78820b4f6de6e709df0beacf6ca404ec196a3fb
SHA512

4d2db7d0f539648aea0227579fdd4b3b6621c079df94fa182eb14d7660815b04a8d4a6fda5c3e87673943e87cb2266ee65a3e344d5c3169f543b39e680acf89a

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer suricata 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
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/988-62-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/988-63-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/988-65-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1236-72-0x00000000000F0000-0x000000000011C000-memory.dmp	xloader
behavioral1/memory/1236-77-0x00000000000F0000-0x000000000011C000-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:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\YFIL_RU0V = "C:\\Program Files (x86)\\Nong4p22x\\helph48pdxd.exe"	msiexec.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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation tmp.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1396 cmd.exe

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

pid	process
1396	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exemsiexec.exe

description	pid	process	target process
PID 1672 set thread context of 988	1672	tmp.exe	tmp.exe
PID 988 set thread context of 1204	988	tmp.exe	Explorer.EXE
PID 1236 set thread context of 1204	1236	msiexec.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Nong4p22x\helph48pdxd.exe msiexec.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Nong4p22x\helph48pdxd.exe	msiexec.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

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

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

tmp.exemsiexec.exe

pid	process
988	tmp.exe
988	tmp.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe
1236	msiexec.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

tmp.exemsiexec.exe

pid process

988 tmp.exe
988 tmp.exe
988 tmp.exe
1236 msiexec.exe
1236 msiexec.exe
1236 msiexec.exe
1236 msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 988 tmp.exe
Token: SeDebugPrivilege 1236 msiexec.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1204 Explorer.EXE
1204 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	988	tmp.exe
Token: SeDebugPrivilege	1236	msiexec.exe

pid	process
1204	Explorer.EXE
1204	Explorer.EXE

pid	process
1204	Explorer.EXE
1204	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

tmp.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1672 wrote to memory of 988	1672	tmp.exe	tmp.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1204 wrote to memory of 1236	1204	Explorer.EXE	msiexec.exe
PID 1236 wrote to memory of 1396	1236	msiexec.exe	cmd.exe
PID 1236 wrote to memory of 1396	1236	msiexec.exe	cmd.exe
PID 1236 wrote to memory of 1396	1236	msiexec.exe	cmd.exe
PID 1236 wrote to memory of 1396	1236	msiexec.exe	cmd.exe
PID 1236 wrote to memory of 1968	1236	msiexec.exe	Firefox.exe
PID 1236 wrote to memory of 1968	1236	msiexec.exe	Firefox.exe
PID 1236 wrote to memory of 1968	1236	msiexec.exe	Firefox.exe
PID 1236 wrote to memory of 1968	1236	msiexec.exe	Firefox.exe
PID 1236 wrote to memory of 1968	1236	msiexec.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:1204

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"{path}"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:988

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.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:1236

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Deletes itself
PID:1396

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1968

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

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Downloads

memory/988-66-0x0000000000850000-0x0000000000B53000-memory.dmp

Filesize
3.0MB

Download
memory/988-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/988-67-0x0000000000290000-0x00000000002A1000-memory.dmp

Filesize
68KB

Download
memory/988-63-0x000000000041F6F0-mapping.dmp

Download
memory/988-65-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/988-59-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/988-60-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1204-76-0x0000000003DF0000-0x0000000003F1C000-memory.dmp

Filesize
1.2MB

Download
memory/1204-68-0x0000000004A90000-0x0000000004BD8000-memory.dmp

Filesize
1.3MB

Download
memory/1204-78-0x0000000003DF0000-0x0000000003F1C000-memory.dmp

Filesize
1.2MB

Download
memory/1236-74-0x0000000002410000-0x0000000002713000-memory.dmp

Filesize
3.0MB

Download
memory/1236-75-0x0000000000A50000-0x0000000000AE0000-memory.dmp

Filesize
576KB

Download
memory/1236-77-0x00000000000F0000-0x000000000011C000-memory.dmp

Filesize
176KB

Download
memory/1236-69-0x0000000000000000-mapping.dmp

Download
memory/1236-72-0x00000000000F0000-0x000000000011C000-memory.dmp

Filesize
176KB

Download
memory/1236-71-0x0000000000FF0000-0x0000000001004000-memory.dmp

Filesize
80KB

Download
memory/1396-73-0x0000000000000000-mapping.dmp

Download
memory/1672-55-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/1672-56-0x0000000000490000-0x000000000049A000-memory.dmp

Filesize
40KB

Download
memory/1672-58-0x0000000000920000-0x0000000000990000-memory.dmp

Filesize
448KB

Download
memory/1672-57-0x0000000005DE0000-0x0000000005EA2000-memory.dmp

Filesize
776KB

Download
memory/1672-54-0x0000000000E20000-0x0000000000F0C000-memory.dmp

Filesize
944KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads