3aed9bd2be64895be6b613ad86bb875511fb41ade9fd4479c6225c8b61da49a8

Analysis

max time kernel
158s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 16:56

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General

Target

b7e7e5d27549a3b2a966154c7a6da670.exe
Size

59KB
MD5

b7e7e5d27549a3b2a966154c7a6da670
SHA1

bd5d184f039569d31f9f733e20a805e680095480
SHA256

3aed9bd2be64895be6b613ad86bb875511fb41ade9fd4479c6225c8b61da49a8
SHA512

25466ba625eafb9a18aa7bc7fc67d4c3e1dc60ed03893299fe40febc14eae45a04526de3f2a1508b3cf85db6c53c9d190a89c99ab98b8a0e6f13c02294962c35
SSDEEP

768:XocAX3LKew369lp2z3Sd4baFXLjwP/Tgj93b8NIocVSEFGocAX3LKew369lp2z3I:SKcR4mjD9r823FHKcR4mjD9r823Fp5

Score

7^/10

persistence spyware stealer upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1988	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 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2600-0-0x00000000006D0000-0x00000000006E7000-memory.dmp	upx
behavioral2/files/0x0007000000023212-6.dat	upx
behavioral2/memory/2600-8-0x00000000006D0000-0x00000000006E7000-memory.dmp	upx
behavioral2/memory/1988-7-0x0000000000410000-0x0000000000427000-memory.dmp	upx
behavioral2/files/0x000400000001e807-12.dat	upx
behavioral2/memory/1988-16-0x0000000000410000-0x0000000000427000-memory.dmp	upx
behavioral2/files/0x00050000000224ff-31.dat	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"	b7e7e5d27549a3b2a966154c7a6da670.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	b7e7e5d27549a3b2a966154c7a6da670.exe
File created	C:\Windows\CTS.exe	CTS.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2600	b7e7e5d27549a3b2a966154c7a6da670.exe
Token: SeDebugPrivilege	1988	CTS.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2600 wrote to memory of 1988	2600	b7e7e5d27549a3b2a966154c7a6da670.exe	87
PID 2600 wrote to memory of 1988	2600	b7e7e5d27549a3b2a966154c7a6da670.exe	87
PID 2600 wrote to memory of 1988	2600	b7e7e5d27549a3b2a966154c7a6da670.exe	87

C:\Users\Admin\AppData\Local\Temp\b7e7e5d27549a3b2a966154c7a6da670.exe
"C:\Users\Admin\AppData\Local\Temp\b7e7e5d27549a3b2a966154c7a6da670.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2600
- 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:1988

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

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
1ed053ce78871dfdbdfb36a16aa0838e

SHA1
5223c1dcb5799cd11090e62de0507a0f693d9b66

SHA256
c6aade2433e679297d52ca73cc5543d51aaa948c258ceffca5864122c52b8f9f

SHA512
35556174b468063c45c55f29214f43cfd538451359525c49ddcab467b12c82ffcbb00343cdf041efafb650db17d8642dcf87bf9bfedd57ec6dfd00aa3a87e409

Download Submit
C:\Users\Admin\AppData\Local\Temp\y7vMRL3j5Ov1NUw.exe

Filesize
59KB

MD5
960e78fbd79bb9af4808a7c80a44bd61

SHA1
07355b1cdab141983ce97ef7049800915aa7b555

SHA256
814489c9ffca562e3b9bda68057fd1d776150f3abd048cc20f692408fe2c1c12

SHA512
7e74510ddf4a2d6985d2a2e06698f049fcce902f5b8a59d521ffbb56d43178f186e2a09c5828054acec0335b9f90fd7a7f5adc12c7162c390a97eadab33326dd

Download Submit
C:\Windows\CTS.exe

Filesize
59KB

MD5
5efd390d5f95c8191f5ac33c4db4b143

SHA1
42d81b118815361daa3007f1a40f1576e9a9e0bc

SHA256
6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

SHA512
720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

Download Submit
memory/1988-7-0x0000000000410000-0x0000000000427000-memory.dmp

Filesize
92KB

Download
memory/1988-16-0x0000000000410000-0x0000000000427000-memory.dmp

Filesize
92KB

Download
memory/2600-0-0x00000000006D0000-0x00000000006E7000-memory.dmp

Filesize
92KB

Download
memory/2600-8-0x00000000006D0000-0x00000000006E7000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads