5cd7eabb41b5074ed5643baedac594859105f232eb8af3603b67c04372354410

General

Target

4d9cfcc2918f88b3117c4a0f26993871.exe
Size

115KB
MD5

4d9cfcc2918f88b3117c4a0f26993871
SHA1

62ad2cc7eee020573c9a03091c3ecace579d9b5f
SHA256

5cd7eabb41b5074ed5643baedac594859105f232eb8af3603b67c04372354410
SHA512

dcc4eb04e43c5792941bf5bd44d780c38694c1f73cbe80c52527f08d8e66a515e10eb02ef4ad30ad029f094b9fc7fddf40ec21a5a65de35aa23648039fe1eed7
SSDEEP

3072:SKcWmjRrz3ZKcWmjRrz3Cd7t3jP2QECPw9b:hGyGCHcCPk

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
2720	7T1hMOC0D60zb38.exe
4556	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/2000-0-0x0000000000630000-0x0000000000647000-memory.dmp	upx
behavioral2/files/0x000b00000002311f-6.dat	upx
behavioral2/memory/4556-8-0x0000000000830000-0x0000000000847000-memory.dmp	upx
behavioral2/memory/2000-9-0x0000000000630000-0x0000000000647000-memory.dmp	upx
behavioral2/files/0x000400000001e6ff-13.dat	upx
behavioral2/memory/4556-41-0x0000000000830000-0x0000000000847000-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"	4d9cfcc2918f88b3117c4a0f26993871.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	4d9cfcc2918f88b3117c4a0f26993871.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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
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

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	2000	4d9cfcc2918f88b3117c4a0f26993871.exe
Token: SeDebugPrivilege	4556	CTS.exe
Token: SeBackupPrivilege	3144	dw20.exe
Token: SeBackupPrivilege	3144	dw20.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2000 wrote to memory of 2720	2000	4d9cfcc2918f88b3117c4a0f26993871.exe	93
PID 2000 wrote to memory of 2720	2000	4d9cfcc2918f88b3117c4a0f26993871.exe	93
PID 2000 wrote to memory of 4556	2000	4d9cfcc2918f88b3117c4a0f26993871.exe	95
PID 2000 wrote to memory of 4556	2000	4d9cfcc2918f88b3117c4a0f26993871.exe	95
PID 2000 wrote to memory of 4556	2000	4d9cfcc2918f88b3117c4a0f26993871.exe	95
PID 2720 wrote to memory of 3144	2720	7T1hMOC0D60zb38.exe	97
PID 2720 wrote to memory of 3144	2720	7T1hMOC0D60zb38.exe	97

C:\Users\Admin\AppData\Local\Temp\4d9cfcc2918f88b3117c4a0f26993871.exe
"C:\Users\Admin\AppData\Local\Temp\4d9cfcc2918f88b3117c4a0f26993871.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Users\Admin\AppData\Local\Temp\7T1hMOC0D60zb38.exe
  C:\Users\Admin\AppData\Local\Temp\7T1hMOC0D60zb38.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2720
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 816
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:3144
- 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:4556

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
8292610621bd75ca684e7a001b4d129a

SHA1
175682e8f39409991880ffff1498eed47bc77ebd

SHA256
879f3ed326262db8a766a388aa174c7482a9267aebe7225cf9bb257eb22cdab0

SHA512
fbd82de1d4b323b1600eac9acf67a9b1f5259610d0af2535c99ceea189f5cf36872bda2e4eb6268f0ea246552fa2826dca3788b9aa3c4e0e622e6a5c43751bee

Download Submit
C:\Users\Admin\AppData\Local\Temp\7T1hMOC0D60zb38.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/2000-0-0x0000000000630000-0x0000000000647000-memory.dmp

Filesize
92KB

Download
memory/2000-9-0x0000000000630000-0x0000000000647000-memory.dmp

Filesize
92KB

Download
memory/2720-27-0x00007FFA88850000-0x00007FFA891F1000-memory.dmp

Filesize
9.6MB

Download
memory/2720-28-0x00007FFA88850000-0x00007FFA891F1000-memory.dmp

Filesize
9.6MB

Download
memory/2720-29-0x0000000000A90000-0x0000000000AA0000-memory.dmp

Filesize
64KB

Download
memory/2720-39-0x00007FFA88850000-0x00007FFA891F1000-memory.dmp

Filesize
9.6MB

Download
memory/4556-8-0x0000000000830000-0x0000000000847000-memory.dmp

Filesize
92KB

Download
memory/4556-41-0x0000000000830000-0x0000000000847000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads