formbook | b747df969c4c80638e92b68759a8ced53c3d14bf705ad0fece792a566c9f3de9

General

Target

Invoice.exe
Size

993KB
MD5

6f4d64fcfbc82b91eb1f5e9fcffd15d3
SHA1

1ebe973942db3da29de1dc292b8a0c8601f1e7a0
SHA256

b747df969c4c80638e92b68759a8ced53c3d14bf705ad0fece792a566c9f3de9
SHA512

073b24ff9c67c8005419678674f2aa79b72a38566a5496023def857379a7a2b8e4468d3f2803da81900eb3c8d80809e6d9a20fea2ef9c7a94f726f27cabc038c
SSDEEP

24576:LIfkZ8IvMSd+WmvcGi+Dgr1hJsOSt3RpLJjpF:LNhvgOGNDO7Hyp

Score

10^/10

formbook wu27 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

wu27

Decoy

69/AbbgufRx7loCQ5G4WYQ==

uydiDFvHsFxlIrdq

NBlmCe8ii+DEa2ye5G4WYQ==

LicGnHCl/UZ2UMg=

e2lQ8e1lsXvAeX+U5G4WYQ==

2bF/M54rOGusdYqc5G4WYQ==

mQLidD9i82JIsrqysw==

ZdlDYrcsl/L9eH+U5G4WYQ==

80ucyjCJdqXkcNI=

/eg6aKbVvNkwOcxzZyAx3cCTN5E=

lflaF0MvE+fHXoWmrg==

qRfykIXbxMkND1kwe3I=

s6iSNSVOMwnpvFDxdFLlOfqBMw==

imkLObSlIdc=

oBUBm36yNaZ99JYxenA=

ngFE7+IP8Te6N75o

O6Htl8Oyjb0Msrqysw==

f4JgCEnC0LEC9w==

9+dNeq/hVxaAhxzT1pbgzZ2mb3Nf

980jQpYF3y1wMomLfWU=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Invoice.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	Invoice.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Invoice.exeInvoice.exemstsc.exe

description	pid	process	target process
PID 2008 set thread context of 4308	2008	Invoice.exe	Invoice.exe
PID 4308 set thread context of 376	4308	Invoice.exe	Explorer.EXE
PID 3916 set thread context of 376	3916	mstsc.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

Processes:

Invoice.exemstsc.exe

pid	process
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
4308	Invoice.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe
3916	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

376 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Invoice.exemstsc.exe

pid process

4308 Invoice.exe
4308 Invoice.exe
4308 Invoice.exe
3916 mstsc.exe
3916 mstsc.exe
3916 mstsc.exe
3916 mstsc.exe

pid	process
376	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Invoice.exeExplorer.EXEmstsc.exe

description	pid	process
Token: SeDebugPrivilege	4308	Invoice.exe
Token: SeShutdownPrivilege	376	Explorer.EXE
Token: SeCreatePagefilePrivilege	376	Explorer.EXE
Token: SeShutdownPrivilege	376	Explorer.EXE
Token: SeCreatePagefilePrivilege	376	Explorer.EXE
Token: SeDebugPrivilege	3916	mstsc.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Invoice.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 2008 wrote to memory of 4308	2008	Invoice.exe	Invoice.exe
PID 376 wrote to memory of 3916	376	Explorer.EXE	mstsc.exe
PID 376 wrote to memory of 3916	376	Explorer.EXE	mstsc.exe
PID 376 wrote to memory of 3916	376	Explorer.EXE	mstsc.exe
PID 3916 wrote to memory of 1620	3916	mstsc.exe	Firefox.exe
PID 3916 wrote to memory of 1620	3916	mstsc.exe	Firefox.exe
PID 3916 wrote to memory of 1620	3916	mstsc.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:376

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2008

C:\Users\Admin\AppData\Local\Temp\Invoice.exe
"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4308

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3916

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/376-156-0x0000000009270000-0x00000000093BF000-memory.dmp

Filesize
1.3MB

Download
memory/376-145-0x0000000008C70000-0x0000000008DC6000-memory.dmp

Filesize
1.3MB

Download
memory/376-152-0x0000000008C70000-0x0000000008DC6000-memory.dmp

Filesize
1.3MB

Download
memory/376-155-0x0000000009270000-0x00000000093BF000-memory.dmp

Filesize
1.3MB

Download
memory/2008-132-0x0000000000720000-0x000000000081E000-memory.dmp

Filesize
1016KB

Download
memory/2008-136-0x000000000B230000-0x000000000B2CC000-memory.dmp

Filesize
624KB

Download
memory/2008-135-0x00000000051D0000-0x00000000051DA000-memory.dmp

Filesize
40KB

Download
memory/2008-134-0x0000000005240000-0x00000000052D2000-memory.dmp

Filesize
584KB

Download
memory/2008-133-0x0000000005750000-0x0000000005CF4000-memory.dmp

Filesize
5.6MB

Download
memory/3916-150-0x0000000000B70000-0x0000000000B9D000-memory.dmp

Filesize
180KB

Download
memory/3916-154-0x0000000002DA0000-0x0000000002E2F000-memory.dmp

Filesize
572KB

Download
memory/3916-153-0x0000000000B70000-0x0000000000B9D000-memory.dmp

Filesize
180KB

Download
memory/3916-151-0x0000000002F60000-0x00000000032AA000-memory.dmp

Filesize
3.3MB

Download
memory/3916-146-0x0000000000000000-mapping.dmp

Download
memory/3916-149-0x0000000000F90000-0x00000000010CA000-memory.dmp

Filesize
1.2MB

Download
memory/4308-138-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4308-148-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4308-147-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4308-144-0x0000000001360000-0x0000000001370000-memory.dmp

Filesize
64KB

Download
memory/4308-143-0x00000000017B0000-0x0000000001AFA000-memory.dmp

Filesize
3.3MB

Download
memory/4308-142-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4308-141-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4308-140-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4308-137-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads