privateloader | c633d7549fb4a77e02fa1e48f8fb3e3b41d8a998778d2e2c024949673dad0ba5

Analysis

max time kernel
48s
max time network
113s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12/12/2022, 10:08

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General

Target
file.exe
Size 2.0MB
Sample221212-l58bcaba79
SHA256 c633d7549fb4a77e02fa1e48f8fb3e3b41d8a998778d2e2c024949673dad0ba5
MD5 6b4b30db49b0dbdf32925501b8cc4531
SHA1 4a532c06a55f36575a6ce747be3a27eed4b8417a
SHA512 702290bb1ca5f8f1436e8eaef6dbca68b45afc59bb19df927c9f4eb896cc16a45f918f65b68099de5d840cbf2e39e9ec779ac7f6343348c26aad1fcbadc48f2d
SSDEEP 49152:r/4fNavQk+IIbOTSbXJRQ1a/G5VnoTwgjTqCCgXuh/JdW:r/40ebOTSjJRjGLnAKCWE
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

privateloader evasion loader themida trojan

Malware Config

Signatures

PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
loader privateloader

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe

Loads dropped DLL 10 IoCs

pid	Process
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe
2040	InstallUtil.exe

Themida packer 2 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1444-55-0x0000000000350000-0x000000000098E000-memory.dmp	themida
behavioral1/memory/1444-62-0x0000000000350000-0x000000000098E000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	file.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
20	ipinfo.io
21	ipinfo.io

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1444	file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1444 set thread context of 2040	1444	file.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1496	2040	WerFault.exe	27

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	InstallUtil.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2040	InstallUtil.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 1444 wrote to memory of 2040	1444	file.exe	27
PID 2040 wrote to memory of 1496	2040	InstallUtil.exe	30
PID 2040 wrote to memory of 1496	2040	InstallUtil.exe	30
PID 2040 wrote to memory of 1496	2040	InstallUtil.exe	30
PID 2040 wrote to memory of 1496	2040	InstallUtil.exe	30

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1444
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - Loads dropped DLL
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 1476
    3⤵
    - Program crash
    PID:1496

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

freebl3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\freebl3.dll
Size 326KB
SHA256 a770ecba3b08bbabd0a567fc978e50615f8b346709f8eb3cfacf3faab24090ba
MD5 ef2834ac4ee7d6724f255beaf527e635
SHA1 5be8c1e73a21b49f353c2ecfa4108e43a883cb7b
SHA512 c6ea0e4347cbd7ef5e80ae8c0afdca20ea23ac2bdd963361dfaf562a9aed58dcbc43f89dd826692a064d76c3f4b3e92361af7b79a6d16a75d9951591ae3544d2
SSDEEP 6144:C8YBC2NpfYjGg7t5xb7WOBOLFwh8yGHrIrvqqDL6XPowD:CbG7F35BVh8yIZqn65D
MD5 SHA1 SHA512 SSDEEP

Submit Download

mozglue.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\mozglue.dll
Size 133KB
SHA256 3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
MD5 8f73c08a9660691143661bf7332c3c27
SHA1 37fa65dd737c50fda710fdbde89e51374d0c204a
SHA512 0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
SSDEEP 3072:7Gyzk/x2Wp53pUzPoNpj/kVghp1qt/dXDyp4D2JJJvPhrSeTuk:6yQ2Wp53iO/kVghp12/dXDyyD2JJJvPR
MD5 SHA1 SHA512 SSDEEP

Submit Download

nss3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\nss3.dll
Size 1.2MB
SHA256 e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
MD5 bfac4e3c5908856ba17d41edcd455a51
SHA1 8eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA512 2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
SSDEEP 24576:Sb5zzlswYNYLVJAwfpeYQ1Dw/fEE8DhSJVIVfRyAkgO6S/V/jbHpls4MSRSMxkoo:4zW5ygDwnEZIYkjgWjblMSRSMqH
MD5 SHA1 SHA512 SSDEEP

Submit Download

softokn3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\softokn3.dll
Size 141KB
SHA256 43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
MD5 a2ee53de9167bf0d6c019303b7ca84e5
SHA1 2a3c737fa1157e8483815e98b666408a18c0db42
SHA512 45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
SSDEEP 3072:UAf6suip+d7FEk/oJz69sFaXeu9CoT2nIVFetBWsqeFwdMIo:p6PbsF4CoT2OeU4SMB
MD5 SHA1 SHA512 SSDEEP

Submit Download

softokn3.dll

Path \Users\Admin\AppData\Local\Temp\LocalSimba7YsPsyVtOl\softokn3.dll
Size 141KB
SHA256 43536adef2ddcc811c28d35fa6ce3031029a2424ad393989db36169ff2995083
MD5 a2ee53de9167bf0d6c019303b7ca84e5
SHA1 2a3c737fa1157e8483815e98b666408a18c0db42
SHA512 45b56432244f86321fa88fbcca6a0d2a2f7f4e0648c1d7d7b1866adc9daa5eddd9f6bb73662149f279c9ab60930dad1113c8337cb5e6ec9eed5048322f65f7d8
SSDEEP 3072:UAf6suip+d7FEk/oJz69sFaXeu9CoT2nIVFetBWsqeFwdMIo:p6PbsF4CoT2OeU4SMB
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1444-55-0x0000000000350000-0x000000000098E000-memory.dmp

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memory/1444-58-0x0000000077A10000-0x0000000077BB9000-memory.dmp

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memory/1444-64-0x0000000077A10000-0x0000000077BB9000-memory.dmp

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memory/1444-56-0x0000000002300000-0x0000000002376000-memory.dmp

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memory/1444-62-0x0000000000350000-0x000000000098E000-memory.dmp

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memory/1444-57-0x0000000000350000-0x000000000098E000-memory.dmp

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memory/2040-66-0x0000000000400000-0x0000000000437000-memory.dmp

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memory/2040-59-0x0000000000400000-0x0000000000437000-memory.dmp

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memory/2040-65-0x0000000075ED1000-0x0000000075ED3000-memory.dmp

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memory/2040-67-0x0000000004890000-0x0000000004FFA000-memory.dmp

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memory/2040-63-0x0000000000400000-0x0000000000437000-memory.dmp

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memory/2040-79-0x0000000000400000-0x0000000000437000-memory.dmp

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memory/2040-80-0x0000000004890000-0x0000000004FFA000-memory.dmp

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