formbook | ffb63b1c0f03e57910b1f9b67f89bfe69768e5121ed5a0ecfc3af93dd6bc4c1f

General

Target

tue.exe
Size

286KB
MD5

5d7af334812811e24e911aa5e7468184
SHA1

e0b1d2b8236917892e9bfa5b5262d118a08dd5ab
SHA256

ffb63b1c0f03e57910b1f9b67f89bfe69768e5121ed5a0ecfc3af93dd6bc4c1f
SHA512

71e5d63eb4ef2929112d472113822b91b0a115b44ea08f5fa39f95246c83088a2062c8217cd8b158c7595b4e6ddb38337c580c1c8fb6a9df9193e2794223a148
SSDEEP

6144:PYa6fzrO3bOJZB/sEAMgNpD5Z3dyFY7MHMxuh3AWdKifUT2iKv7A:PYVHDJZB//AMgr3dymYsxU3AWdfUTfcU

Score

10^/10

formbook xloader poub loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/552-66-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/552-70-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/880-78-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader
behavioral1/memory/880-80-0x00000000000D0000-0x00000000000FC000-memory.dmp	xloader

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:

tkgcahr.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Control Panel\International\Geo\Nation	tkgcahr.exe

Executes dropped EXE 2 IoCs

Processes:

tkgcahr.exetkgcahr.exe

pid process

2020 tkgcahr.exe
552 tkgcahr.exe
Loads dropped DLL 2 IoCs

Processes:

tue.exetkgcahr.exe

pid process

1144 tue.exe
2020 tkgcahr.exe

pid	process
2020	tkgcahr.exe
552	tkgcahr.exe

pid	process
1144	tue.exe
2020	tkgcahr.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run	cmmon32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\K6D0BVQ8WLK = "C:\\Program Files (x86)\\Xgdyljnbp\\ms7nihzln0.exe"	cmmon32.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

tkgcahr.exetkgcahr.execmmon32.exe

description	pid	process	target process
PID 2020 set thread context of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 552 set thread context of 1260	552	tkgcahr.exe	Explorer.EXE
PID 880 set thread context of 1260	880	cmmon32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

cmmon32.exe

description ioc process

File opened for modification C:\Program Files (x86)\Xgdyljnbp\ms7nihzln0.exe cmmon32.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)\Xgdyljnbp\ms7nihzln0.exe	cmmon32.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmmon32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1563773381-2037468142-1146002597-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

tkgcahr.execmmon32.exe

pid	process
552	tkgcahr.exe
552	tkgcahr.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

tkgcahr.exetkgcahr.execmmon32.exe

pid process

2020 tkgcahr.exe
552 tkgcahr.exe
552 tkgcahr.exe
552 tkgcahr.exe
880 cmmon32.exe
880 cmmon32.exe
880 cmmon32.exe
880 cmmon32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tkgcahr.execmmon32.exe

description pid process

Token: SeDebugPrivilege 552 tkgcahr.exe
Token: SeDebugPrivilege 880 cmmon32.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE
1260 Explorer.EXE
Suspicious use of UnmapMainImage 1 IoCs

Processes:

Explorer.EXE

pid process

1260 Explorer.EXE

pid	process
1260	Explorer.EXE

pid	process
2020	tkgcahr.exe
552	tkgcahr.exe
552	tkgcahr.exe
552	tkgcahr.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe
880	cmmon32.exe

description	pid	process
Token: SeDebugPrivilege	552	tkgcahr.exe
Token: SeDebugPrivilege	880	cmmon32.exe

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE
1260	Explorer.EXE

pid	process
1260	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

tue.exetkgcahr.exeExplorer.EXEcmmon32.exe

description	pid	process	target process
PID 1144 wrote to memory of 2020	1144	tue.exe	tkgcahr.exe
PID 1144 wrote to memory of 2020	1144	tue.exe	tkgcahr.exe
PID 1144 wrote to memory of 2020	1144	tue.exe	tkgcahr.exe
PID 1144 wrote to memory of 2020	1144	tue.exe	tkgcahr.exe
PID 2020 wrote to memory of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 2020 wrote to memory of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 2020 wrote to memory of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 2020 wrote to memory of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 2020 wrote to memory of 552	2020	tkgcahr.exe	tkgcahr.exe
PID 1260 wrote to memory of 880	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 880	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 880	1260	Explorer.EXE	cmmon32.exe
PID 1260 wrote to memory of 880	1260	Explorer.EXE	cmmon32.exe
PID 880 wrote to memory of 1696	880	cmmon32.exe	cmd.exe
PID 880 wrote to memory of 1696	880	cmmon32.exe	cmd.exe
PID 880 wrote to memory of 1696	880	cmmon32.exe	cmd.exe
PID 880 wrote to memory of 1696	880	cmmon32.exe	cmd.exe
PID 880 wrote to memory of 1604	880	cmmon32.exe	Firefox.exe
PID 880 wrote to memory of 1604	880	cmmon32.exe	Firefox.exe
PID 880 wrote to memory of 1604	880	cmmon32.exe	Firefox.exe
PID 880 wrote to memory of 1604	880	cmmon32.exe	Firefox.exe
PID 880 wrote to memory of 1604	880	cmmon32.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1260

C:\Users\Admin\AppData\Local\Temp\tue.exe
"C:\Users\Admin\AppData\Local\Temp\tue.exe"
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1144

C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe
"C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe" C:\Users\Admin\AppData\Local\Temp\lscnelih.s
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2020

C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe
"C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:552

C:\Windows\SysWOW64\cmmon32.exe
"C:\Windows\SysWOW64\cmmon32.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:880

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe"
3⤵
PID:1696

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1604

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\lscnelih.s
Filesize
5KB

MD5
663b9828eb94c8cffc4722dcb8810cee

SHA1
b99a8142a609a1d32b836bc4d2879a1399f9ebe4

SHA256
a275aab03a00e9d322d639c842e53f9ebd4578fb792e25bff0cc4aca2bf86401

SHA512
d4497fce6de8a5a8f302efde70c5ce1c9ad5f95a0e1d6da38ed4a9b24c1af70ec699bbc84f33bdeeada2329466db220dd7ade31f44cba964817ca01c16d68ca5

Download Submit
C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe
Filesize
130KB

MD5
dede21ce3a763370f572d69e9d4e7291

SHA1
5aafe471f5179d3914b2c02443641891ae5a29d3

SHA256
6f9ca0d8b6ed0781b4fab0ec9d5b2e225ff9816fa8de76f9376161ecbbab05da

SHA512
f85778bea03fc274554adbd74e8e13342ffe1d1716d69a28ae8a73d77c517d75e086b77eb2af707eacfc687b871c7f2e224d97d736940fad46921b6b8d54ea96

Download Submit
C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe
Filesize
130KB

MD5
dede21ce3a763370f572d69e9d4e7291

SHA1
5aafe471f5179d3914b2c02443641891ae5a29d3

SHA256
6f9ca0d8b6ed0781b4fab0ec9d5b2e225ff9816fa8de76f9376161ecbbab05da

SHA512
f85778bea03fc274554adbd74e8e13342ffe1d1716d69a28ae8a73d77c517d75e086b77eb2af707eacfc687b871c7f2e224d97d736940fad46921b6b8d54ea96

Download Submit
C:\Users\Admin\AppData\Local\Temp\tkgcahr.exe
Filesize
130KB

MD5
dede21ce3a763370f572d69e9d4e7291

SHA1
5aafe471f5179d3914b2c02443641891ae5a29d3

SHA256
6f9ca0d8b6ed0781b4fab0ec9d5b2e225ff9816fa8de76f9376161ecbbab05da

SHA512
f85778bea03fc274554adbd74e8e13342ffe1d1716d69a28ae8a73d77c517d75e086b77eb2af707eacfc687b871c7f2e224d97d736940fad46921b6b8d54ea96

Download Submit
C:\Users\Admin\AppData\Local\Temp\ycrlvlm.fm
Filesize
196KB

MD5
9f83347bac30a5ad401e3d1ec33f08d0

SHA1
a7ebf73447d07ada006d91a5eda2cef1a9b4685e

SHA256
59c029c13fa82b4c420e8e8b3e9ed8d09c5fa451d0023bac00066a795ee0e2e6

SHA512
8d7fcd7c01cfb42f62719e08b4c3fe29a3f475a190af825764c67285193efc335f843222d8e5d66a94155e22ff535cfee9a2f861805acbb8faaf8da5c6585dbc

Download Submit
\Users\Admin\AppData\Local\Temp\tkgcahr.exe
Filesize
130KB

MD5
dede21ce3a763370f572d69e9d4e7291

SHA1
5aafe471f5179d3914b2c02443641891ae5a29d3

SHA256
6f9ca0d8b6ed0781b4fab0ec9d5b2e225ff9816fa8de76f9376161ecbbab05da

SHA512
f85778bea03fc274554adbd74e8e13342ffe1d1716d69a28ae8a73d77c517d75e086b77eb2af707eacfc687b871c7f2e224d97d736940fad46921b6b8d54ea96

Download Submit
\Users\Admin\AppData\Local\Temp\tkgcahr.exe
Filesize
130KB

MD5
dede21ce3a763370f572d69e9d4e7291

SHA1
5aafe471f5179d3914b2c02443641891ae5a29d3

SHA256
6f9ca0d8b6ed0781b4fab0ec9d5b2e225ff9816fa8de76f9376161ecbbab05da

SHA512
f85778bea03fc274554adbd74e8e13342ffe1d1716d69a28ae8a73d77c517d75e086b77eb2af707eacfc687b871c7f2e224d97d736940fad46921b6b8d54ea96

Download Submit
memory/552-70-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/552-72-0x0000000000590000-0x00000000005A1000-memory.dmp

Filesize
68KB

Download
memory/552-71-0x0000000000700000-0x0000000000A03000-memory.dmp

Filesize
3.0MB

Download
memory/552-66-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/880-82-0x0000000000440000-0x00000000004D0000-memory.dmp

Filesize
576KB

Download
memory/880-75-0x00000000001E0000-0x00000000001ED000-memory.dmp

Filesize
52KB

Download
memory/880-77-0x00000000001E0000-0x00000000001ED000-memory.dmp

Filesize
52KB

Download
memory/880-79-0x0000000001FD0000-0x00000000022D3000-memory.dmp

Filesize
3.0MB

Download
memory/880-78-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/880-80-0x00000000000D0000-0x00000000000FC000-memory.dmp

Filesize
176KB

Download
memory/1260-73-0x0000000006E00000-0x0000000006FA0000-memory.dmp

Filesize
1.6MB

Download
memory/1260-83-0x0000000003AB0000-0x0000000003B49000-memory.dmp

Filesize
612KB

Download
memory/1260-84-0x0000000003AB0000-0x0000000003B49000-memory.dmp

Filesize
612KB

Download
memory/1260-86-0x0000000003AB0000-0x0000000003B49000-memory.dmp

Filesize
612KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads