formbook | 82c118d71fb0433b051b37a040f31f2455ceb3ddd01b7d314cf6b1f4648d454d

General

Target

PO20210120.exe
Size

943KB
MD5

6fc44193a2a79ad1bd15606386bb0cb0
SHA1

d76e50ba12ea567584f9ee992b60bbf838be3c0a
SHA256

82c118d71fb0433b051b37a040f31f2455ceb3ddd01b7d314cf6b1f4648d454d
SHA512

554fa9c246a5284cf6f273cd13e744875150a5ac15d6443a46116a3e311ed60feafde4c9364f8d23dfef22bf1abb38a1bae2c21405c94a68489376a04a1c96ec

Score

10^/10

formbook ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.adamjbrowne.com/knb/

Decoy

nona-home.com

themundoverdeproject.com

nhlkrakenfans.com

mak-bauunternehmung.com

public-secret.com

exitumgestao.com

stopforeclosurenow.net

citestbiz1597776507.com

kythuatxetnghiemyhoc.com

longislandeventplanner.com

uaetechworld.com

centretabacstop.net

jomelvendivel.com

agricultureesm.com

successwithspencer.com

companywars.net

terrellhillsdirectory.com

ngldwyy.com

cwiprinting.net

lnstagramgetverifyaccounts.site

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
behavioral1/memory/1124-11-0x000000000041EC00-mapping.dmp	formbook
behavioral1/memory/1124-10-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1088-19-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

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

System Information Discovery
T1082

pid	process
576	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO20210120.exePO20210120.exewlanext.exe

description	pid	process	target process
PID 1668 set thread context of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1124 set thread context of 1248	1124	PO20210120.exe	Explorer.EXE
PID 1088 set thread context of 1248	1088	wlanext.exe	Explorer.EXE

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1064 schtasks.exe

pid	process
1064	schtasks.exe

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

PO20210120.exewlanext.exe

pid	process
1124	PO20210120.exe
1124	PO20210120.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe
1088	wlanext.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO20210120.exewlanext.exe

pid process

1124 PO20210120.exe
1124 PO20210120.exe
1124 PO20210120.exe
1088 wlanext.exe
1088 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO20210120.exewlanext.exe

description pid process

Token: SeDebugPrivilege 1124 PO20210120.exe
Token: SeDebugPrivilege 1088 wlanext.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1124	PO20210120.exe
Token: SeDebugPrivilege	1088	wlanext.exe

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

PO20210120.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1668 wrote to memory of 1064	1668	PO20210120.exe	schtasks.exe
PID 1668 wrote to memory of 1064	1668	PO20210120.exe	schtasks.exe
PID 1668 wrote to memory of 1064	1668	PO20210120.exe	schtasks.exe
PID 1668 wrote to memory of 1064	1668	PO20210120.exe	schtasks.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1668 wrote to memory of 1124	1668	PO20210120.exe	PO20210120.exe
PID 1248 wrote to memory of 1088	1248	Explorer.EXE	wlanext.exe
PID 1248 wrote to memory of 1088	1248	Explorer.EXE	wlanext.exe
PID 1248 wrote to memory of 1088	1248	Explorer.EXE	wlanext.exe
PID 1248 wrote to memory of 1088	1248	Explorer.EXE	wlanext.exe
PID 1088 wrote to memory of 576	1088	wlanext.exe	cmd.exe
PID 1088 wrote to memory of 576	1088	wlanext.exe	cmd.exe
PID 1088 wrote to memory of 576	1088	wlanext.exe	cmd.exe
PID 1088 wrote to memory of 576	1088	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1248

C:\Users\Admin\AppData\Local\Temp\PO20210120.exe
"C:\Users\Admin\AppData\Local\Temp\PO20210120.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1668

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\hTvBqiZhSaoi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3E19.tmp"
3⤵
- Creates scheduled task(s)
PID:1064

C:\Users\Admin\AppData\Local\Temp\PO20210120.exe
"C:\Users\Admin\AppData\Local\Temp\PO20210120.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1124

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:1108

C:\Windows\SysWOW64\wlanext.exe
"C:\Windows\SysWOW64\wlanext.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO20210120.exe"
3⤵
- Deletes itself
PID:576

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp3E19.tmp
MD5
af04ae71918191408dbf54b934d624d1

SHA1
3de2b3e3b1fa7234caf806b622370d85bd777d86

SHA256
8ce4818494896434fb205173995ca67786c83e1706688a4e24568b8cc1556a61

SHA512
aa263e7038141a0c4632c5dbd0803ee1c129fa6df56ad0bc6d700affafd9339a1f2d1d8506c1c2844f090707d30946e239079074e1104bbbeb5a8db1e37a01e2

Download Submit
memory/576-17-0x0000000000000000-mapping.dmp

Download
memory/1064-8-0x0000000000000000-mapping.dmp

Download
memory/1088-16-0x0000000000000000-mapping.dmp

Download
memory/1088-21-0x0000000001D60000-0x0000000001DF3000-memory.dmp

Filesize
588KB

Download
memory/1088-20-0x0000000001EA0000-0x00000000021A3000-memory.dmp

Filesize
3.0MB

Download
memory/1088-19-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1088-18-0x00000000007B0000-0x00000000007C6000-memory.dmp

Filesize
88KB

Download
memory/1124-10-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1124-13-0x00000000009F0000-0x0000000000CF3000-memory.dmp

Filesize
3.0MB

Download
memory/1124-14-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/1124-11-0x000000000041EC00-mapping.dmp

Download
memory/1248-15-0x00000000064C0000-0x000000000666A000-memory.dmp

Filesize
1.7MB

Download
memory/1668-2-0x0000000074110000-0x00000000747FE000-memory.dmp

Filesize
6.9MB

Download
memory/1668-7-0x00000000071C0000-0x0000000007226000-memory.dmp

Filesize
408KB

Download
memory/1668-6-0x0000000007140000-0x0000000007141000-memory.dmp

Filesize
4KB

Download
memory/1668-5-0x0000000000440000-0x0000000000463000-memory.dmp

Filesize
140KB

Download
memory/1668-3-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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