privateloader | ec5aa75c63d2cc06876620a3a1cf21d6ddcb021fb62ece8ba4fe3f7d9d92cd47

Analysis

max time kernel
31s
max time network
33s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
07-02-2023 06:56

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General

Target

a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe
Size

4.7MB
MD5

26492126b5790d0c2a2cb43b427b9ef1
SHA1

34c916130a22cfb916ff2aca642014160bb1e17a
SHA256

a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615
SHA512

9596d59dcd2b59ddfd3d3a090bc97ea0baa5cb82508aaa462a4cf719bace65c290ce7ec420b4dda498a72366d457ded52c8dd5e1dd3b3700b6be70353cfb22dd
SSDEEP

98304:tHrhmizRHXVbI95+BEKCepBtEvZcAiPj6eGs:eizRl03+tBtERcAG6i

Score

10^/10

privateloader loader

Malware Config

Signatures

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader
Loads dropped DLL 10 IoCs

Processes:

vbc.exe

pid process

316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
316 vbc.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ipinfo.io
2 ipinfo.io
Suspicious use of SetThreadContext 1 IoCs

Processes:

a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe

description pid process target process

PID 976 set thread context of 316 976 a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe vbc.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

332 976 WerFault.exe a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe

pid	process
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe
316	vbc.exe

flow	ioc
1	ipinfo.io
2	ipinfo.io

description	pid	process	target process
PID 976 set thread context of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe

pid	pid_target	process	target process
332	976	WerFault.exe	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.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

Processes:

vbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	vbc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	vbc.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

vbc.exe

pid process

316 vbc.exe

pid	process
316	vbc.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe

description	pid	process	target process
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 316	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	vbc.exe
PID 976 wrote to memory of 332	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	WerFault.exe
PID 976 wrote to memory of 332	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	WerFault.exe
PID 976 wrote to memory of 332	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	WerFault.exe
PID 976 wrote to memory of 332	976	a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe
"C:\Users\Admin\AppData\Local\Temp\a6c743d5647c5cf3ed9a8ab7adc58660b4e87faf386d1a954c672cf73a82f615.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:976

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
PID:316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 976 -s 48
2⤵
- Program crash
PID:332

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\freebl3.dll
Filesize
326KB

MD5
ef2834ac4ee7d6724f255beaf527e635

SHA1
5be8c1e73a21b49f353c2ecfa4108e43a883cb7b

SHA256
a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba

SHA512
c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\mozglue.dll
Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\nss3.dll
Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\softokn3.dll
Filesize
141KB

MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

Download Submit
\Users\Admin\AppData\Local\Temp\LocalSimbagGptRIKZhUJ\softokn3.dll
Filesize
141KB

MD5
a2ee53de9167bf0d6c019303b7ca84e5

SHA1
2a3c737fa1157e8483815e98b666408a18c0db42

SHA256
43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083

SHA512
45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8

Download Submit
memory/316-65-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/316-54-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/316-64-0x0000000075891000-0x0000000075893000-memory.dmp

Filesize
8KB

Download
memory/316-63-0x000000000045F69C-mapping.dmp

Download
memory/316-56-0x0000000000400000-0x000000000077D000-memory.dmp

Filesize
3.5MB

Download
memory/332-66-0x0000000000000000-mapping.dmp

Download