formbook | fa5502396dc7ec0fc5508d901eb8b3e555558cdbaff338a1911db0edd4563b78

General

Target

uorr23190.exe
Size

249KB
MD5

28e013c2654f47916f1a62cf09308cad
SHA1

fa785ccc69ec30254ee9b81f87dca6764350075e
SHA256

fa5502396dc7ec0fc5508d901eb8b3e555558cdbaff338a1911db0edd4563b78
SHA512

69c2de2dd642e287a956baf250ebe592b00b93295600006232fe69e473dcd2dc350df2b0ecb7f92a3d0a20e35f8951bd8e25e6290bcf629df97e326e738f16ca

Score

10^/10

formbook rv9n rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

rv9n

C2

http://www.cjspizza.net/rv9n/

Decoy

olivia-grace.show

zhuwww.com

keiretsu.xyz

olidnh.space

searuleansec.com

2fastrepair.com

brooklynmetalroof.com

scodol.com

novaprint.pro

the-loaner.com

nextroundscap.com

zbwlggs.com

internetautodealer.com

xn--tornrealestate-ekb.com

yunjiuhuo.com

skandinaviskakryptobanken.com

coxivarag.rest

ophthalmologylab.com

zzzzgjcdbqnn98.net

doeful.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/2268-116-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/2268-117-0x000000000041F120-mapping.dmp	formbook
behavioral2/memory/984-125-0x0000000000A80000-0x0000000000AAF000-memory.dmp	formbook

Loads dropped DLL 1 IoCs

Processes:

uorr23190.exe

pid process

1556 uorr23190.exe

pid	process
1556	uorr23190.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

uorr23190.exeuorr23190.exewlanext.exe

description	pid	process	target process
PID 1556 set thread context of 2268	1556	uorr23190.exe	uorr23190.exe
PID 2268 set thread context of 3008	2268	uorr23190.exe	Explorer.EXE
PID 984 set thread context of 3008	984	wlanext.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 60 IoCs

Processes:

uorr23190.exewlanext.exe

pid	process
2268	uorr23190.exe
2268	uorr23190.exe
2268	uorr23190.exe
2268	uorr23190.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe
984	wlanext.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3008 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

uorr23190.exewlanext.exe

pid process

2268 uorr23190.exe
2268 uorr23190.exe
2268 uorr23190.exe
984 wlanext.exe
984 wlanext.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

uorr23190.exewlanext.exe

description pid process

Token: SeDebugPrivilege 2268 uorr23190.exe
Token: SeDebugPrivilege 984 wlanext.exe

pid	process
3008	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2268	uorr23190.exe
Token: SeDebugPrivilege	984	wlanext.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

uorr23190.exeExplorer.EXEwlanext.exe

description	pid	process	target process
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 1556 wrote to memory of 2268	1556	uorr23190.exe	uorr23190.exe
PID 3008 wrote to memory of 984	3008	Explorer.EXE	wlanext.exe
PID 3008 wrote to memory of 984	3008	Explorer.EXE	wlanext.exe
PID 3008 wrote to memory of 984	3008	Explorer.EXE	wlanext.exe
PID 984 wrote to memory of 3212	984	wlanext.exe	cmd.exe
PID 984 wrote to memory of 3212	984	wlanext.exe	cmd.exe
PID 984 wrote to memory of 3212	984	wlanext.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3008

C:\Users\Admin\AppData\Local\Temp\uorr23190.exe
"C:\Users\Admin\AppData\Local\Temp\uorr23190.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1556

C:\Users\Admin\AppData\Local\Temp\uorr23190.exe
"C:\Users\Admin\AppData\Local\Temp\uorr23190.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2268

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:984

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\uorr23190.exe"
3⤵
PID:3212

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\nsdCBBE.tmp\yzwbonbom.dll
MD5
8b7c957c4a8ddf81d0ebb46d55054e1e

SHA1
6a17d7bf1915a1ccdfa39227a10fa443400af774

SHA256
1eaf128b2888192f6659cc7c70aa0db515057449f873f40e0fd3a3cd6a8105b0

SHA512
a6579a5c8a1f26b786cd29823d0106f0b876df41256b3c21fa5d7a041c3a696b62ae87dcd0fd1336240c82bce37ae7e0ecefbf8dbb6d57c57aeaf3e399f7b2e3

Download Submit
memory/984-124-0x0000000000FD0000-0x0000000000FE7000-memory.dmp

Filesize
92KB

Download
memory/984-122-0x0000000000000000-mapping.dmp

Download
memory/984-125-0x0000000000A80000-0x0000000000AAF000-memory.dmp

Filesize
188KB

Download
memory/984-126-0x0000000003330000-0x0000000003650000-memory.dmp

Filesize
3.1MB

Download
memory/984-127-0x0000000002FF0000-0x0000000003083000-memory.dmp

Filesize
588KB

Download
memory/2268-117-0x000000000041F120-mapping.dmp

Download
memory/2268-120-0x00000000008F0000-0x0000000000904000-memory.dmp

Filesize
80KB

Download
memory/2268-119-0x0000000000940000-0x0000000000C60000-memory.dmp

Filesize
3.1MB

Download
memory/2268-116-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3008-121-0x0000000005AE0000-0x0000000005C49000-memory.dmp

Filesize
1.4MB

Download
memory/3008-128-0x0000000003130000-0x00000000031E2000-memory.dmp

Filesize
712KB

Download
memory/3212-123-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads