formbook | 2b1539eebb7c85895026ddcd1e0b062c0d9783d90c7f86236f64f42c2e8d81ea

General

Target

Rechnungszahlung.com.exe
Size

416KB
MD5

a40d9c6f964664b6b5a3ec4ed532df6c
SHA1

4c1b1a2a6610c2f262c41112364e6629d11eb7f9
SHA256

2b1539eebb7c85895026ddcd1e0b062c0d9783d90c7f86236f64f42c2e8d81ea
SHA512

be4f84af50a13e4527d0da3c4ec91aae2ea2ee52e40066699fae1a11265f734d21c84b59c6ab58219014755c33ceb1b92ff13580b09b475644b40673231652b6

Score

10^/10

formbook dn7r rat spyware stealer 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

Formbook Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/836-56-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/836-57-0x000000000041F200-mapping.dmp	formbook
behavioral1/memory/836-62-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/572-68-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

620 cmd.exe
Loads dropped DLL 1 IoCs

Processes:

Rechnungszahlung.com.exe

pid process

2044 Rechnungszahlung.com.exe

pid	process
620	cmd.exe

pid	process
2044	Rechnungszahlung.com.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Rechnungszahlung.com.exeRechnungszahlung.com.exemsdt.exe

description	pid	process	target process
PID 2044 set thread context of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 836 set thread context of 1264	836	Rechnungszahlung.com.exe	Explorer.EXE
PID 836 set thread context of 1264	836	Rechnungszahlung.com.exe	Explorer.EXE
PID 572 set thread context of 1264	572	msdt.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

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

Rechnungszahlung.com.exemsdt.exe

pid	process
836	Rechnungszahlung.com.exe
836	Rechnungszahlung.com.exe
836	Rechnungszahlung.com.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe
572	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

Rechnungszahlung.com.exemsdt.exe

pid process

836 Rechnungszahlung.com.exe
836 Rechnungszahlung.com.exe
836 Rechnungszahlung.com.exe
836 Rechnungszahlung.com.exe
572 msdt.exe
572 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Rechnungszahlung.com.exemsdt.exe

description pid process

Token: SeDebugPrivilege 836 Rechnungszahlung.com.exe
Token: SeDebugPrivilege 572 msdt.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1264 Explorer.EXE
1264 Explorer.EXE

pid	process
1264	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	836	Rechnungszahlung.com.exe
Token: SeDebugPrivilege	572	msdt.exe

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

pid	process
1264	Explorer.EXE
1264	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Rechnungszahlung.com.exeRechnungszahlung.com.exemsdt.exe

description	pid	process	target process
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 2044 wrote to memory of 836	2044	Rechnungszahlung.com.exe	Rechnungszahlung.com.exe
PID 836 wrote to memory of 572	836	Rechnungszahlung.com.exe	msdt.exe
PID 836 wrote to memory of 572	836	Rechnungszahlung.com.exe	msdt.exe
PID 836 wrote to memory of 572	836	Rechnungszahlung.com.exe	msdt.exe
PID 836 wrote to memory of 572	836	Rechnungszahlung.com.exe	msdt.exe
PID 572 wrote to memory of 620	572	msdt.exe	cmd.exe
PID 572 wrote to memory of 620	572	msdt.exe	cmd.exe
PID 572 wrote to memory of 620	572	msdt.exe	cmd.exe
PID 572 wrote to memory of 620	572	msdt.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1264

C:\Users\Admin\AppData\Local\Temp\Rechnungszahlung.com.exe
"C:\Users\Admin\AppData\Local\Temp\Rechnungszahlung.com.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2044

C:\Users\Admin\AppData\Local\Temp\Rechnungszahlung.com.exe
"C:\Users\Admin\AppData\Local\Temp\Rechnungszahlung.com.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:836

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
4⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:572

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Rechnungszahlung.com.exe"
5⤵
- Deletes itself
PID:620

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nsy1611.tmp\xztemc.dll
MD5
9c1dba61231005537c4154af2d66b50a

SHA1
8a51892b643ace4c1a99b45e5b03df795b8bb984

SHA256
4f46b2449a7bd7a664b9328f240fc3bfa522e36918a0b672bec3015761d0b67d

SHA512
cd2fbf5b0a67885cd20dfb2fda999c0d9136d34e3c90745d39acf54a5bcf943e8eeb9ea9a53aa179f10aebec84e360582bdaa81604b879a05ef20813533c0ab7

Download Submit
memory/572-65-0x0000000000000000-mapping.dmp

Download
memory/572-71-0x00000000003F0000-0x0000000000484000-memory.dmp

Filesize
592KB

Download
memory/572-69-0x0000000002410000-0x0000000002713000-memory.dmp

Filesize
3.0MB

Download
memory/572-68-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/572-67-0x0000000000F10000-0x0000000001004000-memory.dmp

Filesize
976KB

Download
memory/620-70-0x0000000000000000-mapping.dmp

Download
memory/836-60-0x0000000000350000-0x0000000000365000-memory.dmp

Filesize
84KB

Download
memory/836-63-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/836-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/836-59-0x0000000000740000-0x0000000000A43000-memory.dmp

Filesize
3.0MB

Download
memory/836-57-0x000000000041F200-mapping.dmp

Download
memory/836-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1264-64-0x0000000006E80000-0x0000000006F94000-memory.dmp

Filesize
1.1MB

Download
memory/1264-61-0x0000000006CE0000-0x0000000006E7D000-memory.dmp

Filesize
1.6MB

Download
memory/1264-72-0x0000000007F10000-0x000000000806C000-memory.dmp

Filesize
1.4MB

Download
memory/2044-54-0x0000000075821000-0x0000000075823000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads