c7a845e3bfd537189a59a12a2b3b6aac7ab8674eb6ea4b2241417589649f0b23

General

Target

2b6d14ab40a341b5fa8a45e10cb807e7.exe
Size

115KB
MD5

2b6d14ab40a341b5fa8a45e10cb807e7
SHA1

b3cc50d4f838259514700a10bb2c329b797c154b
SHA256

c7a845e3bfd537189a59a12a2b3b6aac7ab8674eb6ea4b2241417589649f0b23
SHA512

e31886e831116078e0dd277816d0a7cb06ead237ca8daf39cf5ef34762475fde41fec225efbfe6771bbee9f6cb058617da7639a04f39793fb8747b67ae508fb9
SSDEEP

3072:SKcWmjRrz3ZKcWmjRrz3oyraW74q3DcC8Iv4nLqgq:hGyGVraEL3w8v4nLqgq

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2992	4fFskiLbRugy2GQ.exe
3776	CTS.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
T1552.001

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4936-0-0x00000000005A0000-0x00000000005B7000-memory.dmp	upx
behavioral2/memory/4936-9-0x00000000005A0000-0x00000000005B7000-memory.dmp	upx
behavioral2/files/0x000700000002320f-8.dat	upx
behavioral2/memory/3776-7-0x0000000000680000-0x0000000000697000-memory.dmp	upx
behavioral2/files/0x00040000000227e6-13.dat	upx
behavioral2/memory/3776-40-0x0000000000680000-0x0000000000697000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	2b6d14ab40a341b5fa8a45e10cb807e7.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\CTS.exe	2b6d14ab40a341b5fa8a45e10cb807e7.exe
File created	C:\Windows\CTS.exe	CTS.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe
Token: SeDebugPrivilege	3776	CTS.exe
Token: SeBackupPrivilege	348	dw20.exe
Token: SeBackupPrivilege	348	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4936 wrote to memory of 2992	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe	21
PID 4936 wrote to memory of 2992	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe	21
PID 4936 wrote to memory of 3776	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe	18
PID 4936 wrote to memory of 3776	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe	18
PID 4936 wrote to memory of 3776	4936	2b6d14ab40a341b5fa8a45e10cb807e7.exe	18
PID 2992 wrote to memory of 348	2992	4fFskiLbRugy2GQ.exe	49
PID 2992 wrote to memory of 348	2992	4fFskiLbRugy2GQ.exe	49

C:\Users\Admin\AppData\Local\Temp\2b6d14ab40a341b5fa8a45e10cb807e7.exe
"C:\Users\Admin\AppData\Local\Temp\2b6d14ab40a341b5fa8a45e10cb807e7.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4936
- C:\Windows\CTS.exe
  "C:\Windows\CTS.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of AdjustPrivilegeToken
  PID:3776
- C:\Users\Admin\AppData\Local\Temp\4fFskiLbRugy2GQ.exe
  C:\Users\Admin\AppData\Local\Temp\4fFskiLbRugy2GQ.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 808
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml

Filesize
382KB

MD5
a1a5aabc1841e86f31bfd24db9d8c4b0

SHA1
eae940e6bca55439065468f3fc8ae98a789a5fdc

SHA256
b570f64f5cb354f5a3c35191fc8e9e217743c0debab8a4e94e01da795607e241

SHA512
34b24d20b060d374067cbb3822d57861f8947e928715b273e14219ca51ae341f943426de469ef3de498afd684d335ac9b85a0e2d52a348444462f2962eefaa24

Download Submit
C:\Users\Admin\AppData\Local\Temp\4fFskiLbRugy2GQ.exe

Filesize
56KB

MD5
e115521ba14b75f53dcdff087ec6898f

SHA1
87103a892bb514a93d485fba221bacb9da3aae25

SHA256
59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

SHA512
ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/2992-28-0x0000000001490000-0x00000000014A0000-memory.dmp

Filesize
64KB

Download
memory/2992-27-0x00007FF93C730000-0x00007FF93D0D1000-memory.dmp

Filesize
9.6MB

Download
memory/2992-29-0x00007FF93C730000-0x00007FF93D0D1000-memory.dmp

Filesize
9.6MB

Download
memory/2992-39-0x00007FF93C730000-0x00007FF93D0D1000-memory.dmp

Filesize
9.6MB

Download
memory/3776-7-0x0000000000680000-0x0000000000697000-memory.dmp

Filesize
92KB

Download
memory/3776-40-0x0000000000680000-0x0000000000697000-memory.dmp

Filesize
92KB

Download
memory/4936-0-0x00000000005A0000-0x00000000005B7000-memory.dmp

Filesize
92KB

Download
memory/4936-9-0x00000000005A0000-0x00000000005B7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads