formbook | 5faf43a6f7999e59d5660ed1b485bb6be7a3cb80b753e0a644fd7bc282f7f6bf

General

Target

Order 0091.com.exe
Size

559KB
MD5

c37cb93c1eecd9172347f1badaecb51d
SHA1

ef38eda92ddd78dc47c94afcb06800cc9eedb4af
SHA256

5faf43a6f7999e59d5660ed1b485bb6be7a3cb80b753e0a644fd7bc282f7f6bf
SHA512

5a1b2df9dab18de14afc7eb52d24348d9c1796eb49bc9397d06e8680e6f800e91d36828a94c7308c66f7b8cee35300f0c327c168bb8676ac9c2296f65099531c

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/4316-116-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4316-117-0x000000000041F200-mapping.dmp	formbook
behavioral2/memory/3208-124-0x00000000050B0000-0x00000000050DF000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

Order 0091.com.exe

pid process

3828 Order 0091.com.exe

pid	process
3828	Order 0091.com.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Order 0091.com.exeOrder 0091.com.exechkdsk.exe

description	pid	process	target process
PID 3828 set thread context of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 4316 set thread context of 2672	4316	Order 0091.com.exe	Explorer.EXE
PID 3208 set thread context of 2672	3208	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:

Order 0091.com.exechkdsk.exe

pid	process
4316	Order 0091.com.exe
4316	Order 0091.com.exe
4316	Order 0091.com.exe
4316	Order 0091.com.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe
3208	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2672 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

Order 0091.com.exechkdsk.exe

pid process

4316 Order 0091.com.exe
4316 Order 0091.com.exe
4316 Order 0091.com.exe
3208 chkdsk.exe
3208 chkdsk.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Order 0091.com.exechkdsk.exe

description pid process

Token: SeDebugPrivilege 4316 Order 0091.com.exe
Token: SeDebugPrivilege 3208 chkdsk.exe

pid	process
2672	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4316	Order 0091.com.exe
Token: SeDebugPrivilege	3208	chkdsk.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Order 0091.com.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 3828 wrote to memory of 4316	3828	Order 0091.com.exe	Order 0091.com.exe
PID 2672 wrote to memory of 3208	2672	Explorer.EXE	chkdsk.exe
PID 2672 wrote to memory of 3208	2672	Explorer.EXE	chkdsk.exe
PID 2672 wrote to memory of 3208	2672	Explorer.EXE	chkdsk.exe
PID 3208 wrote to memory of 4452	3208	chkdsk.exe	cmd.exe
PID 3208 wrote to memory of 4452	3208	chkdsk.exe	cmd.exe
PID 3208 wrote to memory of 4452	3208	chkdsk.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2672

C:\Users\Admin\AppData\Local\Temp\Order 0091.com.exe
"C:\Users\Admin\AppData\Local\Temp\Order 0091.com.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3828

C:\Users\Admin\AppData\Local\Temp\Order 0091.com.exe
"C:\Users\Admin\AppData\Local\Temp\Order 0091.com.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4316

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:3208

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Order 0091.com.exe"
3⤵
PID:4452

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\nsxEFE0.tmp\umajjj.dll
MD5
7e55e6ce68778fcd11660965bd28aa8e

SHA1
af2a3c1d3620b268397dc2657b7218c39f6228da

SHA256
c3999cedc4588c80f6cca880dcacf28315673dffd034aef6de374314005c1dd0

SHA512
b260fca450b9a258eb656104f795bfc59fd7dc9d106401e43edb988bf4ac2a94723b1a3e8ccad3c6ec78a1fca3ef85e302ea767ef1645da1becec928c230b980

Download Submit
memory/2672-128-0x0000000007810000-0x0000000007917000-memory.dmp

Filesize
1.0MB

Download
memory/2672-121-0x00000000058D0000-0x0000000005A1D000-memory.dmp

Filesize
1.3MB

Download
memory/3208-123-0x00000000008A0000-0x00000000008AA000-memory.dmp

Filesize
40KB

Download
memory/3208-127-0x0000000005300000-0x0000000005394000-memory.dmp

Filesize
592KB

Download
memory/3208-126-0x0000000005590000-0x00000000058B0000-memory.dmp

Filesize
3.1MB

Download
memory/3208-122-0x0000000000000000-mapping.dmp

Download
memory/3208-124-0x00000000050B0000-0x00000000050DF000-memory.dmp

Filesize
188KB

Download
memory/4316-119-0x00000000009A0000-0x0000000000CC0000-memory.dmp

Filesize
3.1MB

Download
memory/4316-120-0x0000000000D10000-0x0000000000D25000-memory.dmp

Filesize
84KB

Download
memory/4316-117-0x000000000041F200-mapping.dmp

Download
memory/4316-116-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4452-125-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads