formbook | 9a36bb988eb1f8bc83089fc9b406e8fc95ad96c6ef8466b497ec3b34220f6ef3

General

Target

Deposit g.exe
Size

929KB
MD5

9e8d9ab3894d103439345412327c1440
SHA1

bf2afcd8f8db5f3d14621449a5c75ba347adcca3
SHA256

9a36bb988eb1f8bc83089fc9b406e8fc95ad96c6ef8466b497ec3b34220f6ef3
SHA512

d9131bdec04ddf1bb6f472510256c40c3197cf0636e7f4f14859aeb795ce8b25b2f016e02bc1fd99d7b596580984aee63f4e88bf6662649b702219f9639c04d6
SSDEEP

24576:6P5w2x86hvebmPEDagcDhxxxTPouoQHpOLCAVxs:6P5w2x3vf8DaguLgulHpMCAHs

Score

10^/10

formbook modiloader nvp4 persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

nvp4

Decoy

EiywrQNofDNveWY1IESoBA==

yqEWFGRfErX7ICQCwyQ+YeLXtaA=

Ers0rc50nbjso0jbdZTmBw==

XQxVP45+F5OZn3ZBTC7MLe1OF3G5c5uK9A==

RHh4uwtsttjzlxy+eW3+

W+xQshfnvmF5n5x2d+cEVdBNIkQRHRE=

FwlyiuXNX0+Trw==

euLn91on/7DeDe++zbQ4YeLXtaA=

td4cO8m3HDRWtl8p7Q==

ZrlyAAPqc3GXI5k=

OM0IisKOI78FJC/IuIxxAu5nRg==

d6A0QJ6PV+AOpyK+eW3+

+EgxFWUu3Ulatl8p7Q==

GC/stck1ILXn+cWZx7w8W6rPFmO6c5uK9A==

hhIiK4+CKEOfB4tr

mA1pyQ85ye8N

4xgWYcEpEoidv8eXKNncAQ==

L+hOVbe+IWyc8oVUclc=

J7EGaJ+L+wKLXUYg7w==

L5R/nfdgQdMHD+TUKw1Zo3Hb

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

ModiLoader Second Stage 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2796-135-0x0000000004090000-0x00000000040C0000-memory.dmp	modiloader_stage2

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:

Deposit g.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\Control Panel\International\Geo\Nation	Deposit g.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Deposit g.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3011986978-2180659500-3669311805-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Doztixpb = "C:\\Users\\Public\\Doztixpb.url"	Deposit g.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

Deposit g.exewscript.exe

description	pid	process	target process
PID 2796 set thread context of 1416	2796	Deposit g.exe	Explorer.EXE
PID 4536 set thread context of 1416	4536	wscript.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3011986978-2180659500-3669311805-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	20	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	18	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

Deposit g.exewscript.exe

pid	process
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
2796	Deposit g.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe
4536	wscript.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1416 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Deposit g.exewscript.exe

pid process

2796 Deposit g.exe
2796 Deposit g.exe
2796 Deposit g.exe
4536 wscript.exe
4536 wscript.exe
4536 wscript.exe
4536 wscript.exe

pid	process
1416	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Deposit g.exeExplorer.EXEwscript.exe

description	pid	process
Token: SeDebugPrivilege	2796	Deposit g.exe
Token: SeShutdownPrivilege	1416	Explorer.EXE
Token: SeCreatePagefilePrivilege	1416	Explorer.EXE
Token: SeDebugPrivilege	4536	wscript.exe

Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

1416 Explorer.EXE

pid	process
1416	Explorer.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

Explorer.EXEwscript.exe

description	pid	process	target process
PID 1416 wrote to memory of 4536	1416	Explorer.EXE	wscript.exe
PID 1416 wrote to memory of 4536	1416	Explorer.EXE	wscript.exe
PID 1416 wrote to memory of 4536	1416	Explorer.EXE	wscript.exe
PID 4536 wrote to memory of 1340	4536	wscript.exe	Firefox.exe
PID 4536 wrote to memory of 1340	4536	wscript.exe	Firefox.exe
PID 4536 wrote to memory of 1340	4536	wscript.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1416

C:\Users\Admin\AppData\Local\Temp\Deposit g.exe
"C:\Users\Admin\AppData\Local\Temp\Deposit g.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2796

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4536

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1340

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

Replay Monitor

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Downloads

memory/1416-154-0x0000000008960000-0x0000000008AEC000-memory.dmp

Filesize
1.5MB

Download
memory/1416-145-0x0000000008580000-0x00000000086D5000-memory.dmp

Filesize
1.3MB

Download
memory/1416-161-0x0000000008960000-0x0000000008AEC000-memory.dmp

Filesize
1.5MB

Download
memory/1416-155-0x0000000008960000-0x0000000008AEC000-memory.dmp

Filesize
1.5MB

Download
memory/2796-135-0x0000000004090000-0x00000000040C0000-memory.dmp

Filesize
192KB

Download
memory/2796-137-0x0000000000400000-0x00000000004EE000-memory.dmp

Filesize
952KB

Download
memory/2796-141-0x0000000004F90000-0x0000000004FBF000-memory.dmp

Filesize
188KB

Download
memory/2796-142-0x0000000004F90000-0x0000000004FBF000-memory.dmp

Filesize
188KB

Download
memory/2796-143-0x0000000005580000-0x00000000058CA000-memory.dmp

Filesize
3.3MB

Download
memory/2796-144-0x0000000005020000-0x0000000005030000-memory.dmp

Filesize
64KB

Download
memory/2796-133-0x0000000000700000-0x0000000000701000-memory.dmp

Filesize
4KB

Download
memory/4536-146-0x0000000000710000-0x0000000000737000-memory.dmp

Filesize
156KB

Download
memory/4536-151-0x0000000000E20000-0x0000000000E4D000-memory.dmp

Filesize
180KB

Download
memory/4536-153-0x0000000002D80000-0x0000000002E0F000-memory.dmp

Filesize
572KB

Download
memory/4536-150-0x0000000002F00000-0x000000000324A000-memory.dmp

Filesize
3.3MB

Download
memory/4536-149-0x0000000000E20000-0x0000000000E4D000-memory.dmp

Filesize
180KB

Download
memory/4536-148-0x0000000000710000-0x0000000000737000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads