formbook | db4c0badc999b10f0dae3d1d80b59c3748de2f6f913fb7bff2d9303e4396a1b4

General

Target

Drawing Image PDF.exe
Size

713KB
MD5

d7ce2f78a17847431c921087487a8b91
SHA1

3a2b899ebfdac8a82b66bd95c4838162e066672e
SHA256

db4c0badc999b10f0dae3d1d80b59c3748de2f6f913fb7bff2d9303e4396a1b4
SHA512

519fd6855a7a22e42e363955593c108d498b2528dd8d3bc2bff2eaf7236be4af83d14c2c3cb90a347ce851286ac3859322cba7e8fed84e4873be29547223f47c

Score

10^/10

formbook xloader k25e loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

k25e

Decoy

Xvh6mA98aHhdW5PD

XpSglwzNIOqe9g==

RWuFLgQ7oCzN4U/2/A==

nf6FGPYyk+veLC0=

FnN4A9ALIOqe9g==

kcXTjYT8eRm8DQOuLW8mYOG8eN8=

yryblm3yv9iO+HZOTbxhSw/FtNcRng==

ZRazQ2DW84uiZaiw6w==

Is1fie9gWoUuX+Czzuk=

lV9ffbe7SO6B

Pj79m1gaBi8Fajo=

tTdnWml24M1Y4Q==

Zq3U8oC/5/SW

l2f5LrEsED3jSoYw/zoy2Q==

oM3TbW/saRS2N3Yqzi31mZoiw9go9Ck=

AyPthJYMGC4dRr3a

uJNV6qnUOsB4lGP6oRHjc00=

09OYj9e/5/SW

9UFZgN4YDzDkQTvg4KFqn2facZ19aGuv

F5PHzC1g0IBdW5PD

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
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1304-138-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/1304-140-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/1232-146-0x0000000000620000-0x000000000064C000-memory.dmp	xloader
behavioral2/memory/1232-149-0x0000000000620000-0x000000000064C000-memory.dmp	xloader

Executes dropped EXE 1 IoCs

Processes:

mjfdahtdtctr.exe

pid process

1828 mjfdahtdtctr.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

pid	process
1828	mjfdahtdtctr.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	colorcpl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\XT58FTBPKT = "C:\\Program Files (x86)\\E1br\\mjfdahtdtctr.exe"	colorcpl.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

Drawing Image PDF.exeRegSvcs.execolorcpl.exe

description	pid	process	target process
PID 2160 set thread context of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 1304 set thread context of 2156	1304	RegSvcs.exe	Explorer.EXE
PID 1232 set thread context of 2156	1232	colorcpl.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEcolorcpl.exe

description	ioc	process
File created	C:\Program Files (x86)\E1br\mjfdahtdtctr.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\E1br\mjfdahtdtctr.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\E1br\mjfdahtdtctr.exe	colorcpl.exe
File opened for modification	C:\Program Files (x86)\E1br	Explorer.EXE

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

Processes:

colorcpl.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

Drawing Image PDF.exeRegSvcs.execolorcpl.exe

pid	process
2160	Drawing Image PDF.exe
2160	Drawing Image PDF.exe
2160	Drawing Image PDF.exe
2160	Drawing Image PDF.exe
1304	RegSvcs.exe
1304	RegSvcs.exe
1304	RegSvcs.exe
1304	RegSvcs.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2156 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

RegSvcs.execolorcpl.exe

pid process

1304 RegSvcs.exe
1304 RegSvcs.exe
1304 RegSvcs.exe
1232 colorcpl.exe
1232 colorcpl.exe
1232 colorcpl.exe
1232 colorcpl.exe

pid	process
2156	Explorer.EXE

pid	process
1304	RegSvcs.exe
1304	RegSvcs.exe
1304	RegSvcs.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe
1232	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

Drawing Image PDF.exeRegSvcs.execolorcpl.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2160	Drawing Image PDF.exe
Token: SeDebugPrivilege	1304	RegSvcs.exe
Token: SeDebugPrivilege	1232	colorcpl.exe
Token: SeShutdownPrivilege	2156	Explorer.EXE
Token: SeCreatePagefilePrivilege	2156	Explorer.EXE
Token: SeShutdownPrivilege	2156	Explorer.EXE
Token: SeCreatePagefilePrivilege	2156	Explorer.EXE
Token: SeShutdownPrivilege	2156	Explorer.EXE
Token: SeCreatePagefilePrivilege	2156	Explorer.EXE
Token: SeShutdownPrivilege	2156	Explorer.EXE
Token: SeCreatePagefilePrivilege	2156	Explorer.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

Drawing Image PDF.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 2160 wrote to memory of 4956	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 4956	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 4956	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1536	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1536	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1536	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2160 wrote to memory of 1304	2160	Drawing Image PDF.exe	RegSvcs.exe
PID 2156 wrote to memory of 1232	2156	Explorer.EXE	colorcpl.exe
PID 2156 wrote to memory of 1232	2156	Explorer.EXE	colorcpl.exe
PID 2156 wrote to memory of 1232	2156	Explorer.EXE	colorcpl.exe
PID 1232 wrote to memory of 4260	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 4260	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 4260	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3000	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3000	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3000	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3764	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3764	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 3764	1232	colorcpl.exe	cmd.exe
PID 1232 wrote to memory of 1632	1232	colorcpl.exe	Firefox.exe
PID 1232 wrote to memory of 1632	1232	colorcpl.exe	Firefox.exe
PID 1232 wrote to memory of 1632	1232	colorcpl.exe	Firefox.exe
PID 2156 wrote to memory of 1828	2156	Explorer.EXE	mjfdahtdtctr.exe
PID 2156 wrote to memory of 1828	2156	Explorer.EXE	mjfdahtdtctr.exe
PID 2156 wrote to memory of 1828	2156	Explorer.EXE	mjfdahtdtctr.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2156

C:\Users\Admin\AppData\Local\Temp\Drawing Image PDF.exe
"C:\Users\Admin\AppData\Local\Temp\Drawing Image PDF.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2160

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:4956

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:1536

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1304

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.exe"
2⤵
- Adds 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
PID:1232

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:4260

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3000

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3764

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1632

C:\Program Files (x86)\E1br\mjfdahtdtctr.exe
"C:\Program Files (x86)\E1br\mjfdahtdtctr.exe"
2⤵
- Executes dropped EXE
PID:1828

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

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

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Downloads

C:\Program Files (x86)\E1br\mjfdahtdtctr.exe
Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
C:\Program Files (x86)\E1br\mjfdahtdtctr.exe
Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/1232-144-0x0000000000000000-mapping.dmp

Download
memory/1232-150-0x0000000002440000-0x00000000024D0000-memory.dmp

Filesize
576KB

Download
memory/1232-149-0x0000000000620000-0x000000000064C000-memory.dmp

Filesize
176KB

Download
memory/1232-148-0x00000000026A0000-0x00000000029EA000-memory.dmp

Filesize
3.3MB

Download
memory/1232-145-0x0000000000D80000-0x0000000000D99000-memory.dmp

Filesize
100KB

Download
memory/1232-146-0x0000000000620000-0x000000000064C000-memory.dmp

Filesize
176KB

Download
memory/1304-137-0x0000000000000000-mapping.dmp

Download
memory/1304-142-0x0000000001C50000-0x0000000001C61000-memory.dmp

Filesize
68KB

Download
memory/1304-141-0x0000000001740000-0x0000000001A8A000-memory.dmp

Filesize
3.3MB

Download
memory/1304-140-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1304-138-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1536-136-0x0000000000000000-mapping.dmp

Download
memory/1828-161-0x0000000004EA0000-0x0000000004EDC000-memory.dmp

Filesize
240KB

Download
memory/1828-160-0x0000000000700000-0x000000000070E000-memory.dmp

Filesize
56KB

Download
memory/1828-157-0x0000000000000000-mapping.dmp

Download
memory/2156-152-0x0000000007710000-0x0000000007868000-memory.dmp

Filesize
1.3MB

Download
memory/2156-151-0x0000000007710000-0x0000000007868000-memory.dmp

Filesize
1.3MB

Download
memory/2156-143-0x00000000029E0000-0x0000000002B40000-memory.dmp

Filesize
1.4MB

Download
memory/2160-134-0x0000000005890000-0x000000000589A000-memory.dmp

Filesize
40KB

Download
memory/2160-133-0x00000000059D0000-0x0000000005A6C000-memory.dmp

Filesize
624KB

Download
memory/2160-130-0x0000000000E30000-0x0000000000EE8000-memory.dmp

Filesize
736KB

Download
memory/2160-132-0x0000000005930000-0x00000000059C2000-memory.dmp

Filesize
584KB

Download
memory/2160-131-0x0000000005E40000-0x00000000063E4000-memory.dmp

Filesize
5.6MB

Download
memory/3000-153-0x0000000000000000-mapping.dmp

Download
memory/3764-155-0x0000000000000000-mapping.dmp

Download
memory/4260-147-0x0000000000000000-mapping.dmp

Download
memory/4956-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads