guloader | 1d23717121434089c2ad8f379f1691c42091704a5742ad688e1cd17c6c52f266

General

Target

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
Size

371KB
MD5

1c058fa9d84f8a6c03f1cc95ec306df4
SHA1

14160aedb7da83d8da8cf1a3e5a07837ae472f4f
SHA256

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79
SHA512

463e97a3d5141ddc5c89d0a9230a3e6a1ef287413896934868b949c4fe94f7e59ae40dcf2a7187af1db823ddd52a6719c40d4f2a5b0917b82e9ced8dfe72ba46
SSDEEP

6144:HY2LjnXgw9HpYRWiXy+akwOPU0ZL4Kq0Xe+tSZnJ8bChtWejOrMgt/8CYhFYunEC:hjnXgw9Hp1ii+akwUUCL4T4StiatWJZm

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
downloader guloader

Checks QEMU agent file 2 TTPs 2 IoCs

Checks presence of QEMU agent, possibly to detect virtualization.

Query Registry

T1012

System Information Discovery

T1082

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exec942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

description	ioc	process
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
File opened (read-only)	C:\Program Files\Qemu-ga\qemu-ga.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Loads dropped DLL 1 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid process

1400 c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012
Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid process

1620 c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid	process
1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exec942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid	process
1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

description	pid	process	target process
PID 1400 set thread context of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Drops file in Program Files directory 1 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

description	ioc	process
File created	C:\Program Files (x86)\Fluorate67\Proportionalitetsvurderingens\Pussiest\Excrescence.lnk	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

2036 1620 WerFault.exe c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid	pid_target	process	target process
2036	1620	WerFault.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Modifies system certificate store 2 TTPs 3 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 0f00000001000000140000003e8e6487f8fd27d322a269a71edaac5d57811286090000000100000034000000303206082b0601050507030106082b0601050507030206082b0601050507030406082b0601050507030306082b0601050507030853000000010000002600000030243022060c2b06010401b231010201050130123010060a2b0601040182373c0101030200c00b00000001000000180000004300b7004f00b7004d00b7004f00b7004400b7004f000000140000000100000014000000a0110a233e96f107ece2af29ef82a57fd030a4b41d00000001000000100000002e0d6875874a44c820912e85e964cfdb030000000100000014000000d1eb23a46d17d68fd92564c2f1f1601764d8e349200000000100000036040000308204323082031aa003020102020101300d06092a864886f70d0101050500307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c18414141204365727469666963617465205365727669636573301e170d3034303130313030303030305a170d3238313233313233353935395a307b310b3009060355040613024742311b301906035504080c1247726561746572204d616e636865737465723110300e06035504070c0753616c666f7264311a3018060355040a0c11436f6d6f646f204341204c696d697465643121301f06035504030c1841414120436572746966696361746520536572766963657330820122300d06092a864886f70d01010105000382010f003082010a0282010100be409df46ee1ea76871c4d45448ebe46c883069dc12afe181f8ee402faf3ab5d508a16310b9a06d0c57022cd492d5463ccb66e68460b53eacb4c24c0bc724eeaf115aef4549a120ac37ab23360e2da8955f32258f3dedccfef8386a28c944f9f68f29890468427c776bfe3cc352c8b5e07646582c048b0a891f9619f762050a891c766b5eb78620356f08a1a13ea31a31ea099fd38f6f62732586f07f56bb8fb142bafb7aaccd6635f738cda0599a838a8cb17783651ace99ef4783a8dcf0fd942e2980cab2f9f0e01deef9f9949f12ddfac744d1b98b547c5e529d1f99018c7629cbe83c7267b3e8a25c7c0dd9de6356810209d8fd8ded2c3849c0d5ee82fc90203010001a381c03081bd301d0603551d0e04160414a0110a233e96f107ece2af29ef82a57fd030a4b4300e0603551d0f0101ff040403020106300f0603551d130101ff040530030101ff307b0603551d1f047430723038a036a0348632687474703a2f2f63726c2e636f6d6f646f63612e636f6d2f414141436572746966696361746553657276696365732e63726c3036a034a0328630687474703a2f2f63726c2e636f6d6f646f2e6e65742f414141436572746966696361746553657276696365732e63726c300d06092a864886f70d010105050003820101000856fc02f09be8ffa4fad67bc64480ce4fc4c5f60058cca6b6bc1449680476e8e6ee5dec020f60d68d50184f264e01e3e6b0a5eebfbc745441bffdfc12b8c74f5af48960057f60b7054af3f6f1c2bfc4b97486b62d7d6bccd2f346dd2fc6e06ac3c334032c7d96dd5ac20ea70a99c1058bab0c2ff35c3acf6c37550987de53406c58effcb6ab656e04f61bdc3ce05a15c69ed9f15948302165036cece92173ec9b03a1e037ada015188ffaba02cea72ca910132cd4e50826ab229760f8905e74d4a29a53bdf2a968e0a26ec2d76cb1a30f9ebfeb68e756f2aef2e32b383a0981b56b85d7be2ded3f1ab7b263e2f5622c82d46a004150f139839f95e93696986e	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

pid process

1400 c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exec942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe

description	pid	process	target process
PID 1400 wrote to memory of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
PID 1400 wrote to memory of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
PID 1400 wrote to memory of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
PID 1400 wrote to memory of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
PID 1400 wrote to memory of 1620	1400	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
PID 1620 wrote to memory of 2036	1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	WerFault.exe
PID 1620 wrote to memory of 2036	1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	WerFault.exe
PID 1620 wrote to memory of 2036	1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	WerFault.exe
PID 1620 wrote to memory of 2036	1620	c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
"C:\Users\Admin\AppData\Local\Temp\c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe"
1⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1400

C:\Users\Admin\AppData\Local\Temp\c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe
"C:\Users\Admin\AppData\Local\Temp\c942fb184930197000a272bb568bb1744c906f95ec0d1cdd3387971e0fb21c79.exe"
2⤵
- Checks QEMU agent file
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies system certificate store
- Suspicious use of WriteProcessMemory
PID:1620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 1252
3⤵
- Program crash
PID:2036

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Install Root Certificate

1

T1130

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\nso14BB.tmp\System.dll
Filesize
11KB

MD5
b8992e497d57001ddf100f9c397fcef5

SHA1
e26ddf101a2ec5027975d2909306457c6f61cfbd

SHA256
98bcd1dd88642f4dd36a300c76ebb1ddfbbbc5bfc7e3b6d7435dc6d6e030c13b

SHA512
8823b1904dccfaf031068102cb1def7958a057f49ff369f0e061f1b4db2090021aa620bb8442a2a6ac9355bb74ee54371dc2599c20dc723755a46ede81533a3c

Download Submit
memory/1400-66-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1400-56-0x0000000003AE0000-0x000000000881E000-memory.dmp

Filesize
77.2MB

Download
memory/1400-57-0x0000000003AE0000-0x000000000881E000-memory.dmp

Filesize
77.2MB

Download
memory/1400-58-0x0000000077960000-0x0000000077B09000-memory.dmp

Filesize
1.7MB

Download
memory/1400-76-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1400-62-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1400-63-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1400-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

Download
memory/1620-64-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1620-65-0x0000000001470000-0x00000000061AE000-memory.dmp

Filesize
77.2MB

Download
memory/1620-67-0x0000000077960000-0x0000000077B09000-memory.dmp

Filesize
1.7MB

Download
memory/1620-70-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1620-71-0x0000000001470000-0x00000000061AE000-memory.dmp

Filesize
77.2MB

Download
memory/1620-72-0x0000000000400000-0x0000000001462000-memory.dmp

Filesize
16.4MB

Download
memory/1620-73-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1620-75-0x0000000077B40000-0x0000000077CC0000-memory.dmp

Filesize
1.5MB

Download
memory/1620-61-0x00000000004030D9-mapping.dmp

Download
memory/2036-74-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads