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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4108-138-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4108-144-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4232-148-0x0000000000E00000-0x0000000000E2C000-memory.dmp	xloader
behavioral2/memory/4232-151-0x0000000000E00000-0x0000000000E2C000-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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation tmp.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	tmp.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ZJOLUFWHQ4H4 = "C:\\Program Files (x86)\\Ivvm4v\\p6prtqx.exe"	netsh.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exenetsh.exe

description	pid	process	target process
PID 1252 set thread context of 4108	1252	tmp.exe	tmp.exe
PID 4108 set thread context of 3256	4108	tmp.exe	Explorer.EXE
PID 4232 set thread context of 3256	4232	netsh.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

netsh.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ivvm4v\p6prtqx.exe netsh.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ivvm4v\p6prtqx.exe	netsh.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

tmp.exetmp.exenetsh.exe

pid	process
1252	tmp.exe
1252	tmp.exe
1252	tmp.exe
1252	tmp.exe
4108	tmp.exe
4108	tmp.exe
4108	tmp.exe
4108	tmp.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3256 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

tmp.exenetsh.exe

pid process

4108 tmp.exe
4108 tmp.exe
4108 tmp.exe
4232 netsh.exe
4232 netsh.exe
4232 netsh.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

tmp.exetmp.exenetsh.exe

description pid process

Token: SeDebugPrivilege 1252 tmp.exe
Token: SeDebugPrivilege 4108 tmp.exe
Token: SeDebugPrivilege 4232 netsh.exe

pid	process
3256	Explorer.EXE

pid	process
4108	tmp.exe
4108	tmp.exe
4108	tmp.exe
4232	netsh.exe
4232	netsh.exe
4232	netsh.exe

description	pid	process
Token: SeDebugPrivilege	1252	tmp.exe
Token: SeDebugPrivilege	4108	tmp.exe
Token: SeDebugPrivilege	4232	netsh.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

tmp.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 1252 wrote to memory of 4076	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4076	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4076	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 3648	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 3648	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 3648	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 1252 wrote to memory of 4108	1252	tmp.exe	tmp.exe
PID 3256 wrote to memory of 4232	3256	Explorer.EXE	netsh.exe
PID 3256 wrote to memory of 4232	3256	Explorer.EXE	netsh.exe
PID 3256 wrote to memory of 4232	3256	Explorer.EXE	netsh.exe
PID 4232 wrote to memory of 3016	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 3016	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 3016	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 4148	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 4148	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 4148	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 2528	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 2528	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 2528	4232	netsh.exe	cmd.exe
PID 4232 wrote to memory of 4924	4232	netsh.exe	Firefox.exe
PID 4232 wrote to memory of 4924	4232	netsh.exe	Firefox.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1252

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"{path}"
2⤵
PID:4076

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"{path}"
2⤵
PID:3648

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"{path}"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4108

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3256

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.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:4232

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:3016

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4148

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:2528

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4924

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

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

C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/1252-131-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/1252-132-0x00000000050E0000-0x0000000005172000-memory.dmp

Filesize
584KB

Download
memory/1252-133-0x0000000005180000-0x000000000521C000-memory.dmp

Filesize
624KB

Download
memory/1252-134-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/1252-130-0x00000000005E0000-0x00000000006CC000-memory.dmp

Filesize
944KB

Download
memory/2528-155-0x0000000000000000-mapping.dmp

Download
memory/3016-145-0x0000000000000000-mapping.dmp

Download
memory/3256-150-0x00000000031C0000-0x0000000003316000-memory.dmp

Filesize
1.3MB

Download
memory/3256-142-0x0000000008F40000-0x00000000090CE000-memory.dmp

Filesize
1.6MB

Download
memory/3256-152-0x00000000031C0000-0x0000000003316000-memory.dmp

Filesize
1.3MB

Download
memory/3648-136-0x0000000000000000-mapping.dmp

Download
memory/4076-135-0x0000000000000000-mapping.dmp

Download
memory/4108-144-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4108-141-0x0000000001490000-0x00000000014A1000-memory.dmp

Filesize
68KB

Download
memory/4108-140-0x0000000001530000-0x000000000187A000-memory.dmp

Filesize
3.3MB

Download
memory/4108-138-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4108-137-0x0000000000000000-mapping.dmp

Download
memory/4148-153-0x0000000000000000-mapping.dmp

Download
memory/4232-143-0x0000000000000000-mapping.dmp

Download
memory/4232-151-0x0000000000E00000-0x0000000000E2C000-memory.dmp

Filesize
176KB

Download
memory/4232-149-0x00000000015B0000-0x0000000001640000-memory.dmp

Filesize
576KB

Download
memory/4232-148-0x0000000000E00000-0x0000000000E2C000-memory.dmp

Filesize
176KB

Download
memory/4232-147-0x0000000001720000-0x0000000001A6A000-memory.dmp

Filesize
3.3MB

Download
memory/4232-146-0x0000000000A10000-0x0000000000A2E000-memory.dmp

Filesize
120KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads