chinese_generic_botnet | cbe1d135aa581351521ac9bef584775381fdf782925952e0df2e84297afbc463

General

Target

tmp.exe
Size

1.1MB
MD5

597743cae38ea6db5ebd4ad1b86bd4a2
SHA1

e85fe9fbdf7a231e84cf05de5bb83d2365870ee7
SHA256

cbe1d135aa581351521ac9bef584775381fdf782925952e0df2e84297afbc463
SHA512

5779f16139bd6bab6647157161b1b0aefca4f2d12a784db93cddb938786823b1482d1253e1faa9a683503b32eba6e9c6d472f867f090cc1f37bba5cd35eb8d8e

Score

10^/10

chinese_generic_botnet ramnit banker botnet persistence spyware stealer trojan upx worm

Malware Config

Signatures

Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
botnet chinese_generic_botnet
Ramnit
Ramnit is a versatile family that holds viruses, worms, and Trojans.
trojan spyware stealer worm banker ramnit

Chinese Botnet payload 2 IoCs

botnet

resource	yara_rule
behavioral1/memory/1972-67-0x0000000010000000-0x000000001001F000-memory.dmp	unk_chinese_botnet
behavioral1/memory/1972-71-0x0000000000400000-0x0000000000516000-memory.dmp	unk_chinese_botnet

Executes dropped EXE 2 IoCs

pid	Process
1000	tmpSrv.exe
528	DesktopLayer.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000005c51-55.dat	upx
behavioral1/files/0x0007000000005c51-57.dat	upx
behavioral1/files/0x0007000000005c51-59.dat	upx
behavioral1/files/0x0009000000013168-60.dat	upx
behavioral1/memory/1000-62-0x0000000000400000-0x000000000042E000-memory.dmp	upx
behavioral1/files/0x0009000000013168-63.dat	upx
behavioral1/files/0x0009000000013168-65.dat	upx
behavioral1/memory/528-66-0x0000000000400000-0x000000000042E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
1972	tmp.exe
1000	tmpSrv.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Windows\\Eqmsuyo.exe"	tmp.exe

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\N:	tmp.exe
File opened (read-only)	\??\P:	tmp.exe
File opened (read-only)	\??\R:	tmp.exe
File opened (read-only)	\??\U:	tmp.exe
File opened (read-only)	\??\V:	tmp.exe
File opened (read-only)	\??\W:	tmp.exe
File opened (read-only)	\??\H:	tmp.exe
File opened (read-only)	\??\F:	tmp.exe
File opened (read-only)	\??\Z:	tmp.exe
File opened (read-only)	\??\E:	tmp.exe
File opened (read-only)	\??\G:	tmp.exe
File opened (read-only)	\??\I:	tmp.exe
File opened (read-only)	\??\J:	tmp.exe
File opened (read-only)	\??\L:	tmp.exe
File opened (read-only)	\??\O:	tmp.exe
File opened (read-only)	\??\T:	tmp.exe
File opened (read-only)	\??\Y:	tmp.exe
File opened (read-only)	\??\B:	tmp.exe
File opened (read-only)	\??\M:	tmp.exe
File opened (read-only)	\??\Q:	tmp.exe
File opened (read-only)	\??\S:	tmp.exe
File opened (read-only)	\??\X:	tmp.exe
File opened (read-only)	\??\K:	tmp.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	tmpSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\DesktopLayer.exe	tmpSrv.exe
File opened for modification	C:\Program Files (x86)\Microsoft\pxF892.tmp	tmpSrv.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\Eqmsuyo.exe	tmp.exe
File opened for modification	C:\Windows\Eqmsuyo.exe	tmp.exe

Checks processor information in registry 2 TTPs 2 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	tmp.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	tmp.exe

Modifies Internet Explorer settings 1 TTPs 28 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\en-US = "en-US.1"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\FileNames\	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\DomainSuggestion\NextUpdateDate = "367072126"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{E2C67B71-1A39-11ED-9B96-76B395A35041} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\DomainSuggestion	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3440072777-2118400376-1759599358-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
528	DesktopLayer.exe
528	DesktopLayer.exe
528	DesktopLayer.exe
528	DesktopLayer.exe
1972	tmp.exe
1972	tmp.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1168	iexplore.exe

Suspicious use of SetWindowsHookEx 7 IoCs

pid	Process
1972	tmp.exe
1168	iexplore.exe
1168	iexplore.exe
520	IEXPLORE.EXE
520	IEXPLORE.EXE
520	IEXPLORE.EXE
520	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1000	1972	tmp.exe	27
PID 1972 wrote to memory of 1000	1972	tmp.exe	27
PID 1972 wrote to memory of 1000	1972	tmp.exe	27
PID 1972 wrote to memory of 1000	1972	tmp.exe	27
PID 1000 wrote to memory of 528	1000	tmpSrv.exe	28
PID 1000 wrote to memory of 528	1000	tmpSrv.exe	28
PID 1000 wrote to memory of 528	1000	tmpSrv.exe	28
PID 1000 wrote to memory of 528	1000	tmpSrv.exe	28
PID 528 wrote to memory of 1168	528	DesktopLayer.exe	29
PID 528 wrote to memory of 1168	528	DesktopLayer.exe	29
PID 528 wrote to memory of 1168	528	DesktopLayer.exe	29
PID 528 wrote to memory of 1168	528	DesktopLayer.exe	29
PID 1168 wrote to memory of 520	1168	iexplore.exe	31
PID 1168 wrote to memory of 520	1168	iexplore.exe	31
PID 1168 wrote to memory of 520	1168	iexplore.exe	31
PID 1168 wrote to memory of 520	1168	iexplore.exe	31

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Windows directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1972
- C:\Users\Admin\AppData\Local\Temp\tmpSrv.exe
  C:\Users\Admin\AppData\Local\Temp\tmpSrv.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:1000
- - C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:528
  - - C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1168
    - - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
        
        "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1168 CREDAT:275457 /prefetch:2
        5⤵
        Modifies Internet Explorer settings
        Suspicious use of SetWindowsHookEx
        
        PID:520

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

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

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\Y5AKG9JR.txt

Filesize
606B

MD5
45d4d9d67cce1113927f70f14e75be4b

SHA1
50046dda594d7da088df5bffc2c9330613acfa52

SHA256
781a684a68cf251ddadc1ffa5404f81d42c1521fd4d90c29e21db352f31694ed

SHA512
6b99dee2c0956c8d1055584009edcbd1003dae10f9174ea2ba271580c67014bab2d6936eebf39d7e8f2ce50ac3c947df99d205acb1ec2f1e071da34b96de5b52

Download Submit
\Program Files (x86)\Microsoft\DesktopLayer.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
\Users\Admin\AppData\Local\Temp\tmpSrv.exe

Filesize
55KB

MD5
ff5e1f27193ce51eec318714ef038bef

SHA1
b4fa74a6f4dab3a7ba702b6c8c129f889db32ca6

SHA256
fd6c69c345f1e32924f0a5bb7393e191b393a78d58e2c6413b03ced7482f2320

SHA512
c9d654ead35f40eea484a3dc5b5d0a44294b9e7b41a9bacdafdd463d3de9daa2a43237a5f113f6a9c8ea5e1366823fd3d83da18cd8197aa69a55e9f345512a7a

Download Submit
memory/528-66-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1000-62-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/1972-54-0x0000000075371000-0x0000000075373000-memory.dmp

Filesize
8KB

Download
memory/1972-67-0x0000000010000000-0x000000001001F000-memory.dmp

Filesize
124KB

Download
memory/1972-71-0x0000000000400000-0x0000000000516000-memory.dmp

Filesize
1.1MB

Download
memory/1972-72-0x00000000003D0000-0x00000000003FE000-memory.dmp

Filesize
184KB

Download
memory/1972-73-0x00000000003D0000-0x00000000003FE000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads