formbook | 9872c55101436d6f450d6e71a128b34a6b8943f8da6f2cb043ecb4b9850ae289

General

Target

PO 0008293.exe
Size

599KB
MD5

1d7daf6b49018875976dfb77a9f61a75
SHA1

cb969fdb082b67467d4e4f736070e194722ec2e3
SHA256

9872c55101436d6f450d6e71a128b34a6b8943f8da6f2cb043ecb4b9850ae289
SHA512

ccab46543ef7380bb76fe0b1672dfdd12fcb9a30d2ac5713227a555ea68767cb41f1ab7dbaf4d1b4f0ee8da0e91eec64214ce05df9dcd7d93e56298e37afebdd

Score

10^/10

formbook dn7r rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

dn7r

C2

http://www.yourherogarden.net/dn7r/

Decoy

eventphotographerdfw.com

thehalalcoinstaking.com

philipfaziofineart.com

intercoh.com

gaiaseyephotography.com

chatbotforrealestate.com

lovelancemg.com

marlieskasberger.com

elcongoenespanol.info

lepirecredit.com

distribution-concept.com

e99game.com

exit11festival.com

twodollartoothbrushclub.com

cocktailsandlawn.com

performimprove.network

24horas-telefono-11840.com

cosmossify.com

kellenleote.com

perovskite.energy

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3364-116-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3364-117-0x000000000041F200-mapping.dmp	formbook
behavioral2/memory/3448-125-0x0000000005200000-0x000000000522F000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

PO 0008293.exe

pid process

1420 PO 0008293.exe

pid	process
1420	PO 0008293.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

PO 0008293.exePO 0008293.exechkdsk.exe

description	pid	process	target process
PID 1420 set thread context of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 3364 set thread context of 3020	3364	PO 0008293.exe	Explorer.EXE
PID 3448 set thread context of 3020	3448	chkdsk.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
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

PO 0008293.exechkdsk.exe

pid	process
3364	PO 0008293.exe
3364	PO 0008293.exe
3364	PO 0008293.exe
3364	PO 0008293.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe
3448	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3020 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

PO 0008293.exechkdsk.exe

pid process

3364 PO 0008293.exe
3364 PO 0008293.exe
3364 PO 0008293.exe
3448 chkdsk.exe
3448 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO 0008293.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 3364 PO 0008293.exe
Token: SeDebugPrivilege 3448 chkdsk.exe

pid	process
3020	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3364	PO 0008293.exe
Token: SeDebugPrivilege	3448	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

PO 0008293.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 1420 wrote to memory of 3364	1420	PO 0008293.exe	PO 0008293.exe
PID 3020 wrote to memory of 3448	3020	Explorer.EXE	chkdsk.exe
PID 3020 wrote to memory of 3448	3020	Explorer.EXE	chkdsk.exe
PID 3020 wrote to memory of 3448	3020	Explorer.EXE	chkdsk.exe
PID 3448 wrote to memory of 2256	3448	chkdsk.exe	cmd.exe
PID 3448 wrote to memory of 2256	3448	chkdsk.exe	cmd.exe
PID 3448 wrote to memory of 2256	3448	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3020

C:\Users\Admin\AppData\Local\Temp\PO 0008293.exe
"C:\Users\Admin\AppData\Local\Temp\PO 0008293.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1420

C:\Users\Admin\AppData\Local\Temp\PO 0008293.exe
"C:\Users\Admin\AppData\Local\Temp\PO 0008293.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3364

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3448

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\PO 0008293.exe"
3⤵
PID:2256

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\nsuC2C5.tmp\tvevecbzg.dll
MD5
1d2e950c0682eaa72b943b0a0ec10231

SHA1
7e6ed791b2419212eadb7184c50fcdf80373c5a0

SHA256
2edace61496d3b81bd40c8e8e9a8017acc863657f8f92aa5fdd71916ec270081

SHA512
55b14e37e87dd0ef2938c1f1a67861143cc75c553c6bca357b2ef1d0b9f3c5e32483d07f95942b83a14b5d0235bddcbb6c8a177b4d59f560dc56bc12036bae26

Download Submit
memory/2256-123-0x0000000000000000-mapping.dmp

Download
memory/3020-128-0x0000000005F40000-0x0000000006089000-memory.dmp

Filesize
1.3MB

Download
memory/3020-121-0x0000000006A30000-0x0000000006BD7000-memory.dmp

Filesize
1.7MB

Download
memory/3364-116-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3364-117-0x000000000041F200-mapping.dmp

Download
memory/3364-120-0x00000000009F0000-0x0000000000A05000-memory.dmp

Filesize
84KB

Download
memory/3364-119-0x0000000000A10000-0x0000000000D30000-memory.dmp

Filesize
3.1MB

Download
memory/3448-122-0x0000000000000000-mapping.dmp

Download
memory/3448-125-0x0000000005200000-0x000000000522F000-memory.dmp

Filesize
188KB

Download
memory/3448-126-0x0000000005230000-0x000000000537A000-memory.dmp

Filesize
1.3MB

Download
memory/3448-127-0x00000000056F0000-0x0000000005784000-memory.dmp

Filesize
592KB

Download
memory/3448-124-0x00000000001F0000-0x00000000001FA000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads