formbook | 049549f50f5dd8774148408e909bee0ae120ef176386ed3857ed77c9b52e6667

General

Target

mary.exe
Size

56KB
MD5

e8bf77b057a93cafe70b86fdb9da6aed
SHA1

53f70d6a1f0a48522d90e1612bdf3c4b122fc504
SHA256

f53340a00d5248f81164bd5a1880698c4926cf62dc2fc5c93696f87780733b1a
SHA512

56d4f69822d9790caec4d53a3112038c7b0b518c013638ad7865dbd7a5e80d3d46b4da5d6170e888f5f3ae6c58231b2c3fbc7763f3107965eedb52b05d46461f
SSDEEP

768:k8s3JoK3x2Ncv+kIQZ5N9Fe6HmBouzruiRPPrk+FP:kB36I1vxIMW6HmBxuixPd

Score

10^/10

formbook xloader bbuy loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

bbuy

Decoy

wqbqKCTkCwjtbad3vwJI6Z+a

EqD7JRhUV2ZQDnU=

UlWd0LffZzZeGY0BzkxroA==

sAbXk3SNlPOcRleKI+k=

HCpzqZKnJGDpf+qsxnOnvQ==

vGdG6Ezu8mctzfLnmX/FLDeiPS3M

tcctT/pPwrv7mdA0aw==

Tr6fUz4Ae0mrGA==

NxZtBUfk3aqxS1eKI+k=

TSUVzyy9hBs65j7xXSRVBx+M

fObBavCu4OEt/0pTr98J

2ap9Oy1p8MQP+EtTr98J

FL4Q0TXr1iHWjezVUdQtFT4=

kSFvf2KUliCDOWwacw==

ctqtSLZvqqr/xym6xnOnvQ==

8DqrrnN58fVC

fIrZCP4xwLt7CkGppluStw==

PFKUNZxcpLCtk6yjMus=

4CKOs2UMhs9P8EvLAXO1Hj8aNA==

0pEGOQOa0+SOV9AnYg==

Extracted

Family

xloader

Version

3.ƅ

Campaign

bbuy

Decoy

wqbqKCTkCwjtbad3vwJI6Z+a

EqD7JRhUV2ZQDnU=

UlWd0LffZzZeGY0BzkxroA==

sAbXk3SNlPOcRleKI+k=

HCpzqZKnJGDpf+qsxnOnvQ==

vGdG6Ezu8mctzfLnmX/FLDeiPS3M

tcctT/pPwrv7mdA0aw==

Tr6fUz4Ae0mrGA==

NxZtBUfk3aqxS1eKI+k=

TSUVzyy9hBs65j7xXSRVBx+M

fObBavCu4OEt/0pTr98J

2ap9Oy1p8MQP+EtTr98J

FL4Q0TXr1iHWjezVUdQtFT4=

kSFvf2KUliCDOWwacw==

ctqtSLZvqqr/xym6xnOnvQ==

8DqrrnN58fVC

fIrZCP4xwLt7CkGppluStw==

PFKUNZxcpLCtk6yjMus=

4CKOs2UMhs9P8EvLAXO1Hj8aNA==

0pEGOQOa0+SOV9AnYg==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Blocklisted process makes network request 2 IoCs

flow	pid	Process
12	1284	rundll32.exe
21	1284	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1284	rundll32.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 968 set thread context of 900	968	mary.exe	27
PID 900 set thread context of 1380	900	aspnet_compiler.exe	15
PID 900 set thread context of 1380	900	aspnet_compiler.exe	15
PID 1284 set thread context of 1380	1284	rundll32.exe	15

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
900	aspnet_compiler.exe
900	aspnet_compiler.exe
900	aspnet_compiler.exe
900	aspnet_compiler.exe
900	aspnet_compiler.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
900	aspnet_compiler.exe
900	aspnet_compiler.exe
900	aspnet_compiler.exe
900	aspnet_compiler.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe
1284	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	968	mary.exe
Token: SeDebugPrivilege	900	aspnet_compiler.exe
Token: SeDebugPrivilege	1284	rundll32.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 968 wrote to memory of 900	968	mary.exe	27
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1380 wrote to memory of 1284	1380	Explorer.EXE	28
PID 1284 wrote to memory of 1252	1284	rundll32.exe	31
PID 1284 wrote to memory of 1252	1284	rundll32.exe	31
PID 1284 wrote to memory of 1252	1284	rundll32.exe	31
PID 1284 wrote to memory of 1252	1284	rundll32.exe	31
PID 1284 wrote to memory of 1252	1284	rundll32.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Users\Admin\AppData\Local\Temp\mary.exe
  "C:\Users\Admin\AppData\Local\Temp\mary.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:968
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:900
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1284
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1252

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\sqlite3.dll

Filesize
927KB

MD5
7fd80b1cc72dc580c02ca4cfbfb2592d

SHA1
18da905af878b27151b359cf1a7d0a650764e8a1

SHA256
1e6dccbdf8527abb53c289da920463b7895300d0d984cc7e91a3ecda4e673190

SHA512
13f7f29b5ed31c551aa5f27742557aa4d026a226087d6fcbca094819759ecc753a2c33b7422ae88dc6a4a0a966edb8485a18e59a0283ba2686cae5d78e0190a3

Download Submit
memory/900-72-0x0000000000200000-0x0000000000210000-memory.dmp

Filesize
64KB

Download
memory/900-66-0x0000000000AC0000-0x0000000000DC3000-memory.dmp

Filesize
3.0MB

Download
memory/900-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-64-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-65-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/900-76-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/900-67-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/900-71-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/900-75-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/900-68-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/968-55-0x0000000076831000-0x0000000076833000-memory.dmp

Filesize
8KB

Download
memory/968-54-0x00000000008C0000-0x00000000008D2000-memory.dmp

Filesize
72KB

Download
memory/968-56-0x00000000008A0000-0x00000000008AA000-memory.dmp

Filesize
40KB

Download
memory/1284-83-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/1284-78-0x00000000005E0000-0x00000000005EE000-memory.dmp

Filesize
56KB

Download
memory/1284-79-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/1284-80-0x0000000002150000-0x0000000002453000-memory.dmp

Filesize
3.0MB

Download
memory/1284-81-0x0000000000980000-0x0000000000A0F000-memory.dmp

Filesize
572KB

Download
memory/1380-82-0x00000000069C0000-0x0000000006AA7000-memory.dmp

Filesize
924KB

Download
memory/1380-73-0x0000000006610000-0x00000000066FE000-memory.dmp

Filesize
952KB

Download
memory/1380-84-0x00000000069C0000-0x0000000006AA7000-memory.dmp

Filesize
924KB

Download
memory/1380-69-0x0000000004DE0000-0x0000000004ED0000-memory.dmp

Filesize
960KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads