formbook | 2c6f3126b960f02205390cf54a74de6e32d53cc1d6db64cc4744c9cca63ecca6

General

Target

tmp.exe
Size

533KB
MD5

2ca4db9e581608faaacdd0533b4fd783
SHA1

78065a3d2fdc96c1c9de15a1ca7e39cd96be1137
SHA256

2c6f3126b960f02205390cf54a74de6e32d53cc1d6db64cc4744c9cca63ecca6
SHA512

fcd201fd15e2133052b24b786131d0adb877ba979ce3aedfbb52596dd7636ceb7194df7f1acc5a6d8be1d6fd8e1faea152e2073495fbacadf38728dddbafc847

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3692-136-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3692-142-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/3876-145-0x0000000000810000-0x000000000083C000-memory.dmp	xloader
behavioral2/memory/3876-149-0x0000000000810000-0x000000000083C000-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\TPX0VDUP = "C:\\Program Files (x86)\\P1b9\\Cookiesan5hz.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:

tmp.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	tmp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tmp.exetmp.exeraserver.exe

description	pid	process	target process
PID 4196 set thread context of 3692	4196	tmp.exe	tmp.exe
PID 3692 set thread context of 2940	3692	tmp.exe	Explorer.EXE
PID 3876 set thread context of 2940	3876	raserver.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEraserver.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\P1b9\Cookiesan5hz.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\P1b9\Cookiesan5hz.exe	raserver.exe
File opened for modification	C:\Program Files (x86)\P1b9	Explorer.EXE
File created	C:\Program Files (x86)\P1b9\Cookiesan5hz.exe	Explorer.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-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 46 IoCs

Processes:

tmp.exeraserver.exe

pid	process
3692	tmp.exe
3692	tmp.exe
3692	tmp.exe
3692	tmp.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe
3876	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2940 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

tmp.exeraserver.exe

pid process

3692 tmp.exe
3692 tmp.exe
3692 tmp.exe
3876 raserver.exe
3876 raserver.exe
3876 raserver.exe
3876 raserver.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeraserver.exe

description pid process

Token: SeDebugPrivilege 3692 tmp.exe
Token: SeDebugPrivilege 3876 raserver.exe

pid	process
2940	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3692	tmp.exe
Token: SeDebugPrivilege	3876	raserver.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

tmp.exeExplorer.EXEraserver.exe

description	pid	process	target process
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 4196 wrote to memory of 3692	4196	tmp.exe	tmp.exe
PID 2940 wrote to memory of 3876	2940	Explorer.EXE	raserver.exe
PID 2940 wrote to memory of 3876	2940	Explorer.EXE	raserver.exe
PID 2940 wrote to memory of 3876	2940	Explorer.EXE	raserver.exe
PID 3876 wrote to memory of 2036	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 2036	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 2036	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 3748	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 3748	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 3748	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 5108	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 5108	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 5108	3876	raserver.exe	cmd.exe
PID 3876 wrote to memory of 2416	3876	raserver.exe	Firefox.exe
PID 3876 wrote to memory of 2416	3876	raserver.exe	Firefox.exe
PID 3876 wrote to memory of 2416	3876	raserver.exe	Firefox.exe
PID 2940 wrote to memory of 3920	2940	Explorer.EXE	Cookiesan5hz.exe
PID 2940 wrote to memory of 3920	2940	Explorer.EXE	Cookiesan5hz.exe
PID 2940 wrote to memory of 3920	2940	Explorer.EXE	Cookiesan5hz.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2940

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:4196

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:3692

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:3876

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
3⤵
PID:2036

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:3748

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:5108

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2416

C:\Program Files (x86)\P1b9\Cookiesan5hz.exe
"C:\Program Files (x86)\P1b9\Cookiesan5hz.exe"
2⤵
PID:3920

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/2036-143-0x0000000000000000-mapping.dmp

Download
memory/2940-140-0x0000000008C20000-0x0000000008D9F000-memory.dmp

Filesize
1.5MB

Download
memory/2940-150-0x0000000008E70000-0x0000000008FA2000-memory.dmp

Filesize
1.2MB

Download
memory/2940-148-0x0000000008E70000-0x0000000008FA2000-memory.dmp

Filesize
1.2MB

Download
memory/3692-136-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3692-135-0x0000000000000000-mapping.dmp

Download
memory/3692-139-0x0000000001840000-0x0000000001851000-memory.dmp

Filesize
68KB

Download
memory/3692-138-0x00000000014F0000-0x000000000183A000-memory.dmp

Filesize
3.3MB

Download
memory/3692-142-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3748-151-0x0000000000000000-mapping.dmp

Download
memory/3876-146-0x0000000002700000-0x0000000002A4A000-memory.dmp

Filesize
3.3MB

Download
memory/3876-145-0x0000000000810000-0x000000000083C000-memory.dmp

Filesize
176KB

Download
memory/3876-144-0x0000000000360000-0x000000000037F000-memory.dmp

Filesize
124KB

Download
memory/3876-141-0x0000000000000000-mapping.dmp

Download
memory/3876-147-0x0000000002620000-0x00000000026B0000-memory.dmp

Filesize
576KB

Download
memory/3876-149-0x0000000000810000-0x000000000083C000-memory.dmp

Filesize
176KB

Download
memory/3920-155-0x0000000000000000-mapping.dmp

Download
memory/4196-134-0x0000000007DE0000-0x0000000007E7C000-memory.dmp

Filesize
624KB

Download
memory/4196-133-0x0000000005530000-0x000000000553A000-memory.dmp

Filesize
40KB

Download
memory/4196-130-0x0000000000AE0000-0x0000000000B6C000-memory.dmp

Filesize
560KB

Download
memory/4196-132-0x0000000005550000-0x00000000055E2000-memory.dmp

Filesize
584KB

Download
memory/4196-131-0x0000000005A60000-0x0000000006004000-memory.dmp

Filesize
5.6MB

Download
memory/5108-153-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads