formbook | b87ec1a86d0c11e1183ec3de93241427e393f0016ff662fe6c9d98af2faf22d5

General

Target

Invoice B9800177.exe
Size

628KB
MD5

36efa9e34b8055b9e54572997f85099a
SHA1

ceeb08b5411a56c0fc98388bc427b9aa563d8967
SHA256

b87ec1a86d0c11e1183ec3de93241427e393f0016ff662fe6c9d98af2faf22d5
SHA512

e4bbdaad01e7da77457af0420e9f777f59ec08cebc728b6396696317c69329d6c5a385b584abd642f92138324838e9df347b8f61f346aad9583eac115f1a2413

Score

10^/10

formbook xloader loader persistence rat spyware stealer suricata trojan

Malware Config

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/3520-138-0x0000000000400000-0x000000000042D000-memory.dmp	xloader
behavioral2/memory/3520-144-0x0000000000400000-0x000000000042D000-memory.dmp	xloader
behavioral2/memory/3064-146-0x00000000008A0000-0x00000000008CD000-memory.dmp	xloader
behavioral2/memory/3064-151-0x00000000008A0000-0x00000000008CD000-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:

mstsc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WT9L_RDPAF1 = "C:\\Program Files (x86)\\Jxd8\\u8xdlxlmdn08.exe"	mstsc.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:

Invoice B9800177.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	Invoice B9800177.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

Suspicious use of SetThreadContext 3 IoCs

Processes:

Invoice B9800177.exeInvoice B9800177.exemstsc.exe

description	pid	process	target process
PID 928 set thread context of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 3520 set thread context of 3036	3520	Invoice B9800177.exe	Explorer.EXE
PID 3064 set thread context of 3036	3064	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)\Jxd8\u8xdlxlmdn08.exe mstsc.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Jxd8\u8xdlxlmdn08.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-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 38 IoCs

Processes:

Invoice B9800177.exemstsc.exe

pid	process
3520	Invoice B9800177.exe
3520	Invoice B9800177.exe
3520	Invoice B9800177.exe
3520	Invoice B9800177.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe
3064	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3036 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Invoice B9800177.exemstsc.exe

pid process

3520 Invoice B9800177.exe
3520 Invoice B9800177.exe
3520 Invoice B9800177.exe
3064 mstsc.exe
3064 mstsc.exe
3064 mstsc.exe
3064 mstsc.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Invoice B9800177.exemstsc.exe

description pid process

Token: SeDebugPrivilege 3520 Invoice B9800177.exe
Token: SeDebugPrivilege 3064 mstsc.exe

pid	process
3036	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3520	Invoice B9800177.exe
Token: SeDebugPrivilege	3064	mstsc.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Invoice B9800177.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 928 wrote to memory of 3520	928	Invoice B9800177.exe	Invoice B9800177.exe
PID 3036 wrote to memory of 3064	3036	Explorer.EXE	mstsc.exe
PID 3036 wrote to memory of 3064	3036	Explorer.EXE	mstsc.exe
PID 3036 wrote to memory of 3064	3036	Explorer.EXE	mstsc.exe
PID 3064 wrote to memory of 4112	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 4112	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 4112	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 3248	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 3248	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 3248	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 2872	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 2872	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 2872	3064	mstsc.exe	cmd.exe
PID 3064 wrote to memory of 1216	3064	mstsc.exe	Firefox.exe
PID 3064 wrote to memory of 1216	3064	mstsc.exe	Firefox.exe
PID 3064 wrote to memory of 1216	3064	mstsc.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3036

C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:928

C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3520

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.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:3064

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Invoice B9800177.exe"
3⤵
PID:4112

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:3248

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:2872

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1216

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

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memory/928-132-0x00000000058B0000-0x0000000005E54000-memory.dmp

Filesize
5.6MB

Download
memory/928-133-0x0000000005300000-0x0000000005392000-memory.dmp

Filesize
584KB

Download
memory/928-134-0x00000000052D0000-0x00000000052DA000-memory.dmp

Filesize
40KB

Download
memory/928-135-0x0000000008C70000-0x0000000008D0C000-memory.dmp

Filesize
624KB

Download
memory/928-136-0x0000000008D10000-0x0000000008D76000-memory.dmp

Filesize
408KB

Download
memory/928-131-0x0000000000890000-0x0000000000934000-memory.dmp

Filesize
656KB

Download
memory/2872-155-0x0000000000000000-mapping.dmp

Download
memory/3036-142-0x00000000026A0000-0x000000000275E000-memory.dmp

Filesize
760KB

Download
memory/3036-152-0x0000000006CF0000-0x0000000006DD7000-memory.dmp

Filesize
924KB

Download
memory/3036-150-0x0000000006CF0000-0x0000000006DD7000-memory.dmp

Filesize
924KB

Download
memory/3064-151-0x00000000008A0000-0x00000000008CD000-memory.dmp

Filesize
180KB

Download
memory/3064-143-0x0000000000000000-mapping.dmp

Download
memory/3064-145-0x0000000000460000-0x000000000059A000-memory.dmp

Filesize
1.2MB

Download
memory/3064-146-0x00000000008A0000-0x00000000008CD000-memory.dmp

Filesize
180KB

Download
memory/3064-147-0x0000000002820000-0x0000000002B6A000-memory.dmp

Filesize
3.3MB

Download
memory/3064-149-0x0000000002670000-0x0000000002700000-memory.dmp

Filesize
576KB

Download
memory/3248-153-0x0000000000000000-mapping.dmp

Download
memory/3520-137-0x0000000000000000-mapping.dmp

Download
memory/3520-144-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3520-141-0x0000000001460000-0x0000000001471000-memory.dmp

Filesize
68KB

Download
memory/3520-140-0x0000000001950000-0x0000000001C9A000-memory.dmp

Filesize
3.3MB

Download
memory/3520-138-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4112-148-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads