formbook | 8261a237ce6bd2bfae4c46b2e8a338b00ea9047f1fa6c5cc9ac1e6d00f0a3a06

General

Target

tmp.exe
Size

502KB
MD5

6237a36be522069ff7f84128c2cbb5c4
SHA1

2c57d875e90ef11903529ec81862aa01e8945129
SHA256

8261a237ce6bd2bfae4c46b2e8a338b00ea9047f1fa6c5cc9ac1e6d00f0a3a06
SHA512

c36ae59fca8d0345b1ccf19838894ca2103cab1222c2e2f00f56e57d26d50cbeda24034e5dba05bd2d7cb533997b2235a4adddc992d5069938287d1bbad0855e

Score

10^/10

formbook xloader iewb loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

iewb

Decoy

n8FLlgIlb1rSEg5hJ9xMbw4hcmR38Q==

5vIAIY+pt81OtWs+FdIEdk7Y

LHIKc+oWGIQUUlfAAtEEdk7Y

ePM/cX2jvHrS

5hvPEw22+fdvmJz3C8FIVq0=

mb9EeX2jvHrS

Dx2zIYNvfjo8VUo5

6jVPnyJekv2RAc4gLKNwEqQ=

KWatHyjdE5Gj1Ng=

t9lk70gzUAZty4qjbVjF

6eUBeFPzKBWT125BFNIEdk7Y

dZUXOIyqTJGj1Ng=

iL3TVh2Jl5QVStnzxcAhIL8=

J1prtyklUfZGR/xDD71IbkWRd2yx

s9FgCOBRW9bU0Y6jbVjF

RYCbQDzcFBhcylgu

Fl0BV/8RJm6F9QRg8LXXTLo=

0dhumHzrCCZ3wdQg7nFF1AlL6Tk=

xvL+iL6wwX+/wH9K4lbZ/A==

N0lVceIFD5Gj1Ng=

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
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4456-136-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4456-138-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4456-146-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4964-148-0x0000000000410000-0x000000000043C000-memory.dmp	xloader
behavioral2/memory/4964-153-0x0000000000410000-0x000000000043C000-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:

WWAHost.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	WWAHost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ZNNHLZIXAR = "C:\\Program Files (x86)\\Dcrh\\mfc3foxt.exe"	WWAHost.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

tmp.exetmp.exeWWAHost.exe

description	pid	process	target process
PID 2300 set thread context of 4456	2300	tmp.exe	tmp.exe
PID 4456 set thread context of 3144	4456	tmp.exe	Explorer.EXE
PID 4456 set thread context of 3144	4456	tmp.exe	Explorer.EXE
PID 4964 set thread context of 3144	4964	WWAHost.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

WWAHost.exe

description ioc process

File opened for modification C:\Program Files (x86)\Dcrh\mfc3foxt.exe WWAHost.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dcrh\mfc3foxt.exe	WWAHost.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

WWAHost.exe

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

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

tmp.exeWWAHost.exe

pid	process
4456	tmp.exe
4456	tmp.exe
4456	tmp.exe
4456	tmp.exe
4456	tmp.exe
4456	tmp.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe
4964	WWAHost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3144 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

tmp.exeWWAHost.exe

pid process

4456 tmp.exe
4456 tmp.exe
4456 tmp.exe
4456 tmp.exe
4964 WWAHost.exe
4964 WWAHost.exe
4964 WWAHost.exe
4964 WWAHost.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeWWAHost.exe

description pid process

Token: SeDebugPrivilege 4456 tmp.exe
Token: SeDebugPrivilege 4964 WWAHost.exe

pid	process
3144	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4456	tmp.exe
Token: SeDebugPrivilege	4964	WWAHost.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

tmp.exeExplorer.EXEWWAHost.exe

description	pid	process	target process
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 2300 wrote to memory of 4456	2300	tmp.exe	tmp.exe
PID 3144 wrote to memory of 4964	3144	Explorer.EXE	WWAHost.exe
PID 3144 wrote to memory of 4964	3144	Explorer.EXE	WWAHost.exe
PID 3144 wrote to memory of 4964	3144	Explorer.EXE	WWAHost.exe
PID 4964 wrote to memory of 5028	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 5028	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 5028	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3224	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3224	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3224	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3784	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3784	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 3784	4964	WWAHost.exe	cmd.exe
PID 4964 wrote to memory of 1280	4964	WWAHost.exe	Firefox.exe
PID 4964 wrote to memory of 1280	4964	WWAHost.exe	Firefox.exe
PID 4964 wrote to memory of 1280	4964	WWAHost.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3144

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:2300

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4456

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3548

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3932

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3612

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2236

C:\Windows\SysWOW64\WWAHost.exe
"C:\Windows\SysWOW64\WWAHost.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:4964

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:5028

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:3224

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:3784

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1280

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/2300-130-0x0000000000BE0000-0x0000000000C64000-memory.dmp

Filesize
528KB

Download
memory/2300-133-0x0000000005610000-0x000000000561A000-memory.dmp

Filesize
40KB

Download
memory/2300-134-0x0000000008FE0000-0x000000000907C000-memory.dmp

Filesize
624KB

Download
memory/2300-132-0x0000000005650000-0x00000000056E2000-memory.dmp

Filesize
584KB

Download
memory/2300-131-0x0000000005B60000-0x0000000006104000-memory.dmp

Filesize
5.6MB

Download
memory/3144-152-0x0000000007F00000-0x0000000008069000-memory.dmp

Filesize
1.4MB

Download
memory/3144-141-0x0000000002600000-0x00000000026F4000-memory.dmp

Filesize
976KB

Download
memory/3144-154-0x0000000007F00000-0x0000000008069000-memory.dmp

Filesize
1.4MB

Download
memory/3144-144-0x0000000002700000-0x00000000027E2000-memory.dmp

Filesize
904KB

Download
memory/3224-155-0x0000000000000000-mapping.dmp

Download
memory/3784-157-0x0000000000000000-mapping.dmp

Download
memory/4456-136-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4456-146-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4456-135-0x0000000000000000-mapping.dmp

Download
memory/4456-138-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4456-139-0x0000000001700000-0x0000000001A4A000-memory.dmp

Filesize
3.3MB

Download
memory/4456-140-0x0000000001270000-0x0000000001281000-memory.dmp

Filesize
68KB

Download
memory/4456-143-0x00000000016E0000-0x00000000016F1000-memory.dmp

Filesize
68KB

Download
memory/4964-145-0x0000000000000000-mapping.dmp

Download
memory/4964-153-0x0000000000410000-0x000000000043C000-memory.dmp

Filesize
176KB

Download
memory/4964-151-0x00000000011D0000-0x0000000001260000-memory.dmp

Filesize
576KB

Download
memory/4964-150-0x00000000014A0000-0x00000000017EA000-memory.dmp

Filesize
3.3MB

Download
memory/4964-148-0x0000000000410000-0x000000000043C000-memory.dmp

Filesize
176KB

Download
memory/4964-147-0x0000000000330000-0x000000000040C000-memory.dmp

Filesize
880KB

Download
memory/5028-149-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads