formbook | 1e144fefc15a6a2643674f01b3324e29b5320d45a16a081e8aad8a969712cb9d

General

Target

triage_dropped_file.exe
Size

398KB
MD5

f6eaacd1b39028130602ee0892e67663
SHA1

12ba0b4e8c41ececa29814f9b64da351e5509fb0
SHA256

1e144fefc15a6a2643674f01b3324e29b5320d45a16a081e8aad8a969712cb9d
SHA512

a5705ae52ffde84bbd90d6335f23ffccaccbde9b2e75d2462216662a60cf6a178a6a7f2b318975fd77d05ffc1746c357fc85c717fa2aa20cb480e452e9c5463b

Score

10^/10

formbook a83r rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

a83r

Decoy

comercializadoralonso.com

durhamschoolservces.com

onegreencapital.com

smartcities24.com

maquinas.store

brianlovesbonsai.com

xin41518s.com

moneyearnus.xyz

be-mix.com

fengyat.club

inspectdecided.xyz

paksafpakistan.com

orhidlnt.top

princesuraj.com

vietnamvodka.com

renewnow.site

imageservices.xyz

luxurytravelfranchise.com

kp112.red

royalyorkfirewood.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1652-123-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/1652-126-0x0000000000EF0000-0x00000000017A0000-memory.dmp	formbook
behavioral2/memory/604-129-0x00000000032D0000-0x00000000032FF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

triage_dropped_file.exetriage_dropped_file.exerundll32.exe

description	pid	process	target process
PID 3492 set thread context of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 1652 set thread context of 2880	1652	triage_dropped_file.exe	Explorer.EXE
PID 604 set thread context of 2880	604	rundll32.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

triage_dropped_file.exerundll32.exe

pid	process
1652	triage_dropped_file.exe
1652	triage_dropped_file.exe
1652	triage_dropped_file.exe
1652	triage_dropped_file.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe
604	rundll32.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

triage_dropped_file.exerundll32.exe

pid process

1652 triage_dropped_file.exe
1652 triage_dropped_file.exe
1652 triage_dropped_file.exe
604 rundll32.exe
604 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

triage_dropped_file.exerundll32.exe

description pid process

Token: SeDebugPrivilege 1652 triage_dropped_file.exe
Token: SeDebugPrivilege 604 rundll32.exe

description	pid	process
Token: SeDebugPrivilege	1652	triage_dropped_file.exe
Token: SeDebugPrivilege	604	rundll32.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

triage_dropped_file.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 3492 wrote to memory of 1652	3492	triage_dropped_file.exe	triage_dropped_file.exe
PID 2880 wrote to memory of 604	2880	Explorer.EXE	rundll32.exe
PID 2880 wrote to memory of 604	2880	Explorer.EXE	rundll32.exe
PID 2880 wrote to memory of 604	2880	Explorer.EXE	rundll32.exe
PID 604 wrote to memory of 1148	604	rundll32.exe	cmd.exe
PID 604 wrote to memory of 1148	604	rundll32.exe	cmd.exe
PID 604 wrote to memory of 1148	604	rundll32.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2880

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3492

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1652

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:604

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
3⤵
PID:1148

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/604-128-0x0000000000A50000-0x0000000000A63000-memory.dmp

Filesize
76KB

Download
memory/604-131-0x0000000004B70000-0x0000000004C03000-memory.dmp

Filesize
588KB

Download
memory/604-130-0x0000000004780000-0x0000000004AA0000-memory.dmp

Filesize
3.1MB

Download
memory/604-129-0x00000000032D0000-0x00000000032FF000-memory.dmp

Filesize
188KB

Download
memory/1652-123-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1652-125-0x0000000001320000-0x0000000001640000-memory.dmp

Filesize
3.1MB

Download
memory/1652-126-0x0000000000EF0000-0x00000000017A0000-memory.dmp

Filesize
8.7MB

Download
memory/2880-127-0x0000000002D50000-0x0000000002E0D000-memory.dmp

Filesize
756KB

Download
memory/2880-132-0x0000000002E10000-0x0000000002F8A000-memory.dmp

Filesize
1.5MB

Download
memory/3492-120-0x0000000005230000-0x000000000523C000-memory.dmp

Filesize
48KB

Download
memory/3492-121-0x0000000007760000-0x00000000077FC000-memory.dmp

Filesize
624KB

Download
memory/3492-122-0x00000000078F0000-0x000000000795A000-memory.dmp

Filesize
424KB

Download
memory/3492-115-0x0000000000760000-0x00000000007CA000-memory.dmp

Filesize
424KB

Download
memory/3492-119-0x0000000004FF0000-0x0000000004FFA000-memory.dmp

Filesize
40KB

Download
memory/3492-118-0x0000000005040000-0x000000000553E000-memory.dmp

Filesize
5.0MB

Download
memory/3492-117-0x0000000005040000-0x00000000050D2000-memory.dmp

Filesize
584KB

Download
memory/3492-116-0x0000000005540000-0x0000000005A3E000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads