formbook | 3a611d856359d600d1ab60fc116e58100c8a0cbc720d56cb01b584180ed11086

General

Target

Pending Invoice 38129337.exe
Size

356KB
MD5

8b7820fd7d45dcd564fb92db1ebe9295
SHA1

c383a24a84143123f120f754bb0877b91628ff5b
SHA256

c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7
SHA512

96ffc3d1d785035b47342b700d2930cf4daee597d02e97310a53be8baa819b403dbd96e82470fa0483f5bb442728c4e0eb352ebca0945070a49013451c441590

Score

10^/10

formbook xloader ea0r loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

ea0r

C2

http://www.asiapubz-hk.com/ea0r/

Decoy

lionheartcreativestudios.com

konzertmanagement.com

blackpanther.online

broychim-int.com

takut18.com

txstarsolar.com

herdsherpa.com

igorshestakov.com

shinesbox.com

reflectpkljlt.xyz

oiltoolshub.com

viralmoneychallenge.com

changingalphastrategies.com

mecitiris.com

rdadmin.online

miniambiente.com

kominarcine.com

pino-almond.com

heihit.xyz

junqi888.com

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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3960-119-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral2/memory/3960-120-0x000000000041D410-mapping.dmp	xloader
behavioral2/memory/3992-127-0x0000000000CD0000-0x0000000000CF9000-memory.dmp	xloader
behavioral2/memory/1544-140-0x000000000041D410-mapping.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\QZD0HZG8NRI = "C:\\Program Files (x86)\\Mhdfpdxs\\helprr-d4d.exe"	raserver.exe

Executes dropped EXE 2 IoCs

Processes:

helprr-d4d.exehelprr-d4d.exe

pid process

1252 helprr-d4d.exe
1544 helprr-d4d.exe
Loads dropped DLL 2 IoCs

Processes:

Pending Invoice 38129337.exehelprr-d4d.exe

pid process

3664 Pending Invoice 38129337.exe
1252 helprr-d4d.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

pid	process
1252	helprr-d4d.exe
1544	helprr-d4d.exe

pid	process
3664	Pending Invoice 38129337.exe
1252	helprr-d4d.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Pending Invoice 38129337.exePending Invoice 38129337.exeraserver.exehelprr-d4d.exe

description	pid	process	target process
PID 3664 set thread context of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3960 set thread context of 3056	3960	Pending Invoice 38129337.exe	Explorer.EXE
PID 3992 set thread context of 3056	3992	raserver.exe	Explorer.EXE
PID 1252 set thread context of 1544	1252	helprr-d4d.exe	helprr-d4d.exe

Drops file in Program Files directory 4 IoCs

Processes:

raserver.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	raserver.exe
File opened for modification	C:\Program Files (x86)\Mhdfpdxs	Explorer.EXE
File created	C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

NSIS installer 6 IoCs

installer

Processes:

resource	yara_rule
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_1
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_2
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_1
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_2
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_1
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe	nsis_installer_2

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1042495040-510797905-2613508344-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

Pending Invoice 38129337.exeraserver.exe

pid	process
3960	Pending Invoice 38129337.exe
3960	Pending Invoice 38129337.exe
3960	Pending Invoice 38129337.exe
3960	Pending Invoice 38129337.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3056 Explorer.EXE

pid	process
3056	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Pending Invoice 38129337.exeraserver.exe

pid	process
3960	Pending Invoice 38129337.exe
3960	Pending Invoice 38129337.exe
3960	Pending Invoice 38129337.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe
3992	raserver.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

Pending Invoice 38129337.exeraserver.exeExplorer.EXEhelprr-d4d.exe

description	pid	process
Token: SeDebugPrivilege	3960	Pending Invoice 38129337.exe
Token: SeDebugPrivilege	3992	raserver.exe
Token: SeShutdownPrivilege	3056	Explorer.EXE
Token: SeCreatePagefilePrivilege	3056	Explorer.EXE
Token: SeShutdownPrivilege	3056	Explorer.EXE
Token: SeCreatePagefilePrivilege	3056	Explorer.EXE
Token: SeDebugPrivilege	1544	helprr-d4d.exe

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

Pending Invoice 38129337.exeExplorer.EXEraserver.exehelprr-d4d.exe

description	pid	process	target process
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3664 wrote to memory of 3960	3664	Pending Invoice 38129337.exe	Pending Invoice 38129337.exe
PID 3056 wrote to memory of 3992	3056	Explorer.EXE	raserver.exe
PID 3056 wrote to memory of 3992	3056	Explorer.EXE	raserver.exe
PID 3056 wrote to memory of 3992	3056	Explorer.EXE	raserver.exe
PID 3992 wrote to memory of 4288	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 4288	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 4288	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 492	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 492	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 492	3992	raserver.exe	cmd.exe
PID 3992 wrote to memory of 1204	3992	raserver.exe	Firefox.exe
PID 3992 wrote to memory of 1204	3992	raserver.exe	Firefox.exe
PID 3056 wrote to memory of 1252	3056	Explorer.EXE	helprr-d4d.exe
PID 3056 wrote to memory of 1252	3056	Explorer.EXE	helprr-d4d.exe
PID 3056 wrote to memory of 1252	3056	Explorer.EXE	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 1252 wrote to memory of 1544	1252	helprr-d4d.exe	helprr-d4d.exe
PID 3992 wrote to memory of 1204	3992	raserver.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3056

C:\Users\Admin\AppData\Local\Temp\Pending Invoice 38129337.exe
"C:\Users\Admin\AppData\Local\Temp\Pending Invoice 38129337.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3664

C:\Users\Admin\AppData\Local\Temp\Pending Invoice 38129337.exe
"C:\Users\Admin\AppData\Local\Temp\Pending Invoice 38129337.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3960

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:3992

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Pending Invoice 38129337.exe"
3⤵
PID:4288

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:492

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1204

C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe
"C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1252

C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe
"C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1544

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

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:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe
MD5
8b7820fd7d45dcd564fb92db1ebe9295

SHA1
c383a24a84143123f120f754bb0877b91628ff5b

SHA256
c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7

SHA512
96ffc3d1d785035b47342b700d2930cf4daee597d02e97310a53be8baa819b403dbd96e82470fa0483f5bb442728c4e0eb352ebca0945070a49013451c441590

Download Submit
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe
MD5
8b7820fd7d45dcd564fb92db1ebe9295

SHA1
c383a24a84143123f120f754bb0877b91628ff5b

SHA256
c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7

SHA512
96ffc3d1d785035b47342b700d2930cf4daee597d02e97310a53be8baa819b403dbd96e82470fa0483f5bb442728c4e0eb352ebca0945070a49013451c441590

Download Submit
C:\Program Files (x86)\Mhdfpdxs\helprr-d4d.exe
MD5
8b7820fd7d45dcd564fb92db1ebe9295

SHA1
c383a24a84143123f120f754bb0877b91628ff5b

SHA256
c1657f01ccef85f3f46740a96704bc5dccfb4cf8fc9ac09abcfd7aa6660448f7

SHA512
96ffc3d1d785035b47342b700d2930cf4daee597d02e97310a53be8baa819b403dbd96e82470fa0483f5bb442728c4e0eb352ebca0945070a49013451c441590

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\yrxgm2w0x467y
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
\Users\Admin\AppData\Local\Temp\nsjCDB2.tmp\ancprnfrgdi.dll
MD5
43e23cb30db04f30af162414f5fcb084

SHA1
2f8db11d592b1b28d56f9ba4e8666af458100a3b

SHA256
94f51bd2bafd932f5c3ae824f2a2f93be2978c6b7c194f4f39231bce3ac7fac4

SHA512
cb1ec23a47939760f6fd6e2e090124bf89c89190ed6cfe634274fdcded11fa868b7ca0c7379ec1452339e4c361a6c052f3bca9dfb44595309af02cfe16fa9daf

Download Submit
\Users\Admin\AppData\Local\Temp\nsz578.tmp\ancprnfrgdi.dll
MD5
43e23cb30db04f30af162414f5fcb084

SHA1
2f8db11d592b1b28d56f9ba4e8666af458100a3b

SHA256
94f51bd2bafd932f5c3ae824f2a2f93be2978c6b7c194f4f39231bce3ac7fac4

SHA512
cb1ec23a47939760f6fd6e2e090124bf89c89190ed6cfe634274fdcded11fa868b7ca0c7379ec1452339e4c361a6c052f3bca9dfb44595309af02cfe16fa9daf

Download Submit
memory/492-132-0x0000000000000000-mapping.dmp

Download
memory/1252-134-0x0000000000000000-mapping.dmp

Download
memory/1544-142-0x0000000000B20000-0x0000000000E40000-memory.dmp

Filesize
3.1MB

Download
memory/1544-140-0x000000000041D410-mapping.dmp

Download
memory/3056-124-0x0000000005D10000-0x0000000005E27000-memory.dmp

Filesize
1.1MB

Download
memory/3056-131-0x00000000061C0000-0x000000000634D000-memory.dmp

Filesize
1.6MB

Download
memory/3960-122-0x0000000000A60000-0x0000000000D80000-memory.dmp

Filesize
3.1MB

Download
memory/3960-123-0x00000000005E0000-0x00000000005F1000-memory.dmp

Filesize
68KB

Download
memory/3960-120-0x000000000041D410-mapping.dmp

Download
memory/3960-119-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3992-130-0x0000000004A70000-0x0000000004B00000-memory.dmp

Filesize
576KB

Download
memory/3992-129-0x0000000004BF0000-0x0000000004F10000-memory.dmp

Filesize
3.1MB

Download
memory/3992-127-0x0000000000CD0000-0x0000000000CF9000-memory.dmp

Filesize
164KB

Download
memory/3992-126-0x0000000000EB0000-0x0000000000ECF000-memory.dmp

Filesize
124KB

Download
memory/3992-125-0x0000000000000000-mapping.dmp

Download
memory/4288-128-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads