formbook | 5166a1e854b5d78998547a4444773c97aeeb57abbc9fcc9192d1cd62af941f31

General

Target

swift_copy.exe
Size

47KB
MD5

c73d88805029e688535eb0cf81fe2427
SHA1

c22cc249b36bb6bb0d7419492f8c741ab51caffc
SHA256

5166a1e854b5d78998547a4444773c97aeeb57abbc9fcc9192d1cd62af941f31
SHA512

ddb3d9957ade764297e6c934cacc222a023157c6ce69cb62fc2827faf39314d8b83335aa002cb48780c2d1aac39547bc82b05357c82e6be8462141f164109b43
SSDEEP

768:oVLbB3wowpdgsRTNhTzAL0Jt2aN07wy45rrI:oV6owJvhTkLTk/I

Score

10^/10

formbook xloader zzun loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

zzun

Decoy

JnNtRHyNupy0GqRzAcasu7hb4rc=

Qv593NGLE7p9UNSaVkPXljAJm2QCNnc=

ePArIFWvjkkMgVEVhw4M4Jk=

26rqUwJ7dD0AiDI=

pBAxMHeK741QFw==

kHD7TPt5846pUMTX

56UnjFjHL1i0j659h3LymRnHpQj+SshC

4vKlKHflPqmWXRbrRwfPtrhb4rc=

6LBd4qButFAi

phMzGll8Ue7Fu+inq5cdnPaSugG3

NKswiQGCvZoG5FgsdHEI

rtTHnuUY8M1qVcXV

SOmECrlAt2oGAA==

L1ep9adutFAi

/UE+/AyvE6uEl28weFI=

IP+xMPQxJR4NE6TK

xvW5GN9/rqA5YUoOVt185Sf7Uw==

fRFNW9DhxL6VF7LA

KFYTfkaY741QFw==

W4JGvMBmt2oGAA==

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

Xloader payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1608-64-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1608-65-0x000000000041F6F0-mapping.dmp	xloader
behavioral1/memory/1608-67-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1608-75-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/1084-79-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader
behavioral1/memory/1084-84-0x0000000000090000-0x00000000000BC000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\HNUXN448_6- = "C:\\Program Files (x86)\\Cnj80wbm\\win1b0l.exe"	cmstp.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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

swift_copy.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rlwfhvqc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Dpita\\Rlwfhvqc.exe\""	swift_copy.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

swift_copy.exeInstallUtil.execmstp.exe

description	pid	process	target process
PID 2016 set thread context of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 1608 set thread context of 1208	1608	InstallUtil.exe	Explorer.EXE
PID 1608 set thread context of 1208	1608	InstallUtil.exe	Explorer.EXE
PID 1084 set thread context of 1208	1084	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmstp.exe

description ioc process

File opened for modification C:\Program Files (x86)\Cnj80wbm\win1b0l.exe cmstp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Cnj80wbm\win1b0l.exe	cmstp.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

powershell.exeInstallUtil.execmstp.exe

pid	process
852	powershell.exe
1608	InstallUtil.exe
1608	InstallUtil.exe
1608	InstallUtil.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

InstallUtil.execmstp.exe

pid process

1608 InstallUtil.exe
1608 InstallUtil.exe
1608 InstallUtil.exe
1608 InstallUtil.exe
1084 cmstp.exe
1084 cmstp.exe
1084 cmstp.exe
1084 cmstp.exe

pid	process
1608	InstallUtil.exe
1608	InstallUtil.exe
1608	InstallUtil.exe
1608	InstallUtil.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe
1084	cmstp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

swift_copy.exepowershell.exeInstallUtil.execmstp.exe

description	pid	process
Token: SeDebugPrivilege	2016	swift_copy.exe
Token: SeDebugPrivilege	852	powershell.exe
Token: SeDebugPrivilege	1608	InstallUtil.exe
Token: SeDebugPrivilege	1084	cmstp.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

swift_copy.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 2016 wrote to memory of 852	2016	swift_copy.exe	powershell.exe
PID 2016 wrote to memory of 852	2016	swift_copy.exe	powershell.exe
PID 2016 wrote to memory of 852	2016	swift_copy.exe	powershell.exe
PID 2016 wrote to memory of 852	2016	swift_copy.exe	powershell.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 2016 wrote to memory of 1608	2016	swift_copy.exe	InstallUtil.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1208 wrote to memory of 1084	1208	Explorer.EXE	cmstp.exe
PID 1084 wrote to memory of 1968	1084	cmstp.exe	cmd.exe
PID 1084 wrote to memory of 1968	1084	cmstp.exe	cmd.exe
PID 1084 wrote to memory of 1968	1084	cmstp.exe	cmd.exe
PID 1084 wrote to memory of 1968	1084	cmstp.exe	cmd.exe
PID 1084 wrote to memory of 1808	1084	cmstp.exe	Firefox.exe
PID 1084 wrote to memory of 1808	1084	cmstp.exe	Firefox.exe
PID 1084 wrote to memory of 1808	1084	cmstp.exe	Firefox.exe
PID 1084 wrote to memory of 1808	1084	cmstp.exe	Firefox.exe
PID 1084 wrote to memory of 1808	1084	cmstp.exe	Firefox.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmstp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1208

C:\Users\Admin\AppData\Local\Temp\swift_copy.exe
"C:\Users\Admin\AppData\Local\Temp\swift_copy.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANwA=
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:852

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1608

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1084

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:1968

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1808

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

Defense Evasion

Modify Registry

4

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/852-57-0x0000000000000000-mapping.dmp

Download
memory/852-60-0x000000006E0C0000-0x000000006E66B000-memory.dmp

Filesize
5.7MB

Download
memory/852-59-0x000000006E0C0000-0x000000006E66B000-memory.dmp

Filesize
5.7MB

Download
memory/1084-80-0x0000000001F90000-0x0000000002293000-memory.dmp

Filesize
3.0MB

Download
memory/1084-84-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1084-81-0x00000000008F0000-0x0000000000980000-memory.dmp

Filesize
576KB

Download
memory/1084-79-0x0000000000090000-0x00000000000BC000-memory.dmp

Filesize
176KB

Download
memory/1084-78-0x0000000000B70000-0x0000000000B88000-memory.dmp

Filesize
96KB

Download
memory/1084-74-0x0000000000000000-mapping.dmp

Download
memory/1208-85-0x0000000006F40000-0x00000000070A3000-memory.dmp

Filesize
1.4MB

Download
memory/1208-83-0x0000000004CA0000-0x0000000004E47000-memory.dmp

Filesize
1.7MB

Download
memory/1208-82-0x0000000006F40000-0x00000000070A3000-memory.dmp

Filesize
1.4MB

Download
memory/1208-73-0x0000000004CA0000-0x0000000004E47000-memory.dmp

Filesize
1.7MB

Download
memory/1208-70-0x0000000004B60000-0x0000000004C9A000-memory.dmp

Filesize
1.2MB

Download
memory/1608-69-0x0000000000270000-0x0000000000281000-memory.dmp

Filesize
68KB

Download
memory/1608-72-0x0000000000340000-0x0000000000351000-memory.dmp

Filesize
68KB

Download
memory/1608-75-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1608-68-0x0000000000A20000-0x0000000000D23000-memory.dmp

Filesize
3.0MB

Download
memory/1608-67-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1608-65-0x000000000041F6F0-mapping.dmp

Download
memory/1608-64-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1608-62-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1608-61-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1968-77-0x0000000000000000-mapping.dmp

Download
memory/2016-54-0x0000000001300000-0x0000000001312000-memory.dmp

Filesize
72KB

Download
memory/2016-56-0x00000000057B0000-0x000000000597A000-memory.dmp

Filesize
1.8MB

Download
memory/2016-55-0x0000000075661000-0x0000000075663000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads