chinese_generic_botnet | d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

General

Target

20beeb0a82adcce3a58372804acc46be.exe
Size

400KB
MD5

20beeb0a82adcce3a58372804acc46be
SHA1

c579d9017d2c8298fe075ff5c05963901330e72a
SHA256

d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e
SHA512

7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd
SSDEEP

3072:sAAdrtFV2GenT0cTtm2LAQSXVqjzpYfJhpw7EHbH0hLNZ:ux2GenQ67wk3pyJhpwkUTZ

Score

10^/10

chinese_generic_botnet botnet

Malware Config

Signatures

Generic Chinese Botnet
A botnet originating from China which is currently unnamed publicly.
botnet chinese_generic_botnet

Chinese Botnet payload 1 IoCs

botnet

Processes:

resource	yara_rule
behavioral1/memory/1768-55-0x0000000010000000-0x0000000010018000-memory.dmp	unk_chinese_botnet

Executes dropped EXE 2 IoCs

Processes:

Imsossm.exeImsossm.exe

pid process

456 Imsossm.exe
240 Imsossm.exe

pid	process
456	Imsossm.exe
240	Imsossm.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

Processes:

20beeb0a82adcce3a58372804acc46be.exe

description	ioc	process
File opened (read-only)	\??\E:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\F:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\H:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\N:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\W:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\B:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\I:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\O:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\T:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\Z:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\G:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\L:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\P:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\U:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\X:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\Y:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\J:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\M:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\Q:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\R:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\S:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\V:	20beeb0a82adcce3a58372804acc46be.exe
File opened (read-only)	\??\K:	20beeb0a82adcce3a58372804acc46be.exe

Drops file in System32 directory 2 IoCs

Processes:

Imsossm.exeImsossm.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	Imsossm.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\Temporary Internet Files\counters.dat	Imsossm.exe

Drops file in Program Files directory 2 IoCs

Processes:

20beeb0a82adcce3a58372804acc46be.exe

description	ioc	process
File created	C:\Program Files (x86)\Imsossm.exe	20beeb0a82adcce3a58372804acc46be.exe
File opened for modification	C:\Program Files (x86)\Imsossm.exe	20beeb0a82adcce3a58372804acc46be.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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

Processes:

20beeb0a82adcce3a58372804acc46be.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	20beeb0a82adcce3a58372804acc46be.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	20beeb0a82adcce3a58372804acc46be.exe

Modifies data under HKEY_USERS 49 IoCs

Processes:

Imsossm.exeImsossm.exe

description	ioc	process
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000004000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionTime = f08861418becd801	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\d6-b7-cd-fe-6e-b6	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionTime = f08861418becd801	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionReason = "1"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionReason = "1"	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecision = "0"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDetectedUrl	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecision = "0"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\d6-b7-cd-fe-6e-b6	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionTime = 704c7e4a8becd801	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\SavedLegacySettings = 4600000002000000090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadNetworkName = "Network 2"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionReason = "1"	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadNetworkName = "Network 2"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecisionTime = f08861418becd801	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "1"	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ProxyEnable = "0"	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionTime = 704c7e4a8becd801	Imsossm.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "0"	Imsossm.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings = 4600000003000000090000000000000000000000000000000400000000000000000000000000000000000000000000000000000001000000020000000a7f001b000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecisionReason = "1"	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\{4A72DDFF-71A7-4DEB-BDE0-27C03B1454B5}\WpadDecision = "0"	Imsossm.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	Imsossm.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\d6-b7-cd-fe-6e-b6\WpadDecision = "0"	Imsossm.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

20beeb0a82adcce3a58372804acc46be.exe

pid process

1768 20beeb0a82adcce3a58372804acc46be.exe

pid	process
1768	20beeb0a82adcce3a58372804acc46be.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

Imsossm.exe

description	pid	process	target process
PID 456 wrote to memory of 240	456	Imsossm.exe	Imsossm.exe
PID 456 wrote to memory of 240	456	Imsossm.exe	Imsossm.exe
PID 456 wrote to memory of 240	456	Imsossm.exe	Imsossm.exe
PID 456 wrote to memory of 240	456	Imsossm.exe	Imsossm.exe

C:\Users\Admin\AppData\Local\Temp\20beeb0a82adcce3a58372804acc46be.exe
"C:\Users\Admin\AppData\Local\Temp\20beeb0a82adcce3a58372804acc46be.exe"
1⤵
- Enumerates connected drives
- Drops file in Program Files directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:1768

C:\Program Files (x86)\Imsossm.exe
"C:\Program Files (x86)\Imsossm.exe"
1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:456

C:\Program Files (x86)\Imsossm.exe
"C:\Program Files (x86)\Imsossm.exe" Win7
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:240

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

3

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Imsossm.exe
Filesize
400KB

MD5
20beeb0a82adcce3a58372804acc46be

SHA1
c579d9017d2c8298fe075ff5c05963901330e72a

SHA256
d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

SHA512
7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd

Download Submit
C:\Program Files (x86)\Imsossm.exe
Filesize
400KB

MD5
20beeb0a82adcce3a58372804acc46be

SHA1
c579d9017d2c8298fe075ff5c05963901330e72a

SHA256
d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

SHA512
7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd

Download Submit
C:\Program Files (x86)\Imsossm.exe
Filesize
400KB

MD5
20beeb0a82adcce3a58372804acc46be

SHA1
c579d9017d2c8298fe075ff5c05963901330e72a

SHA256
d1aaa7e7d31bf648c57f0c721d6f6ee2b17395b4e09d9d89a4f6dbd5dd706a8e

SHA512
7636912ba6323063cefb7fac5a6cff9e44a474e452a4d5d4f77ef88968266de184c68112e3667585e02e811781f51ee020e61ce820e3f9a38dcfdf30e6d522bd

Download Submit
memory/240-64-0x0000000000000000-mapping.dmp

Download
memory/1768-54-0x0000000076961000-0x0000000076963000-memory.dmp

Filesize
8KB

Download
memory/1768-55-0x0000000010000000-0x0000000010018000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads