guloader | c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e

General

Target

c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
Size

729KB
MD5

fb4e88fe6e801bd1770fa1b91ead7bfa
SHA1

3739fd72191b66dce2213abf4ae610ede85efbca
SHA256

c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e
SHA512

388e96504ab2590600349a91066882a2ce5f3acf74431ae4d6b02475e443a660eb9f374380159f46384ab401bcd56cff053eac4c553ddfd1b767bfa0ea8e9ad2
SSDEEP

12288:DhoX5zcKxyCiN0DSNYCqbf07Ku7DdrJ++F6DJIG6pWu2PACkfwFLuz:Dw4U80DUY1bfyKQ9c+IDPhu2PAX7

Score

10^/10

guloader discovery downloader

Malware Config

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
2288	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
2288	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3140 set thread context of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2288	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
2288	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3140 wrote to memory of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95
PID 3140 wrote to memory of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95
PID 3140 wrote to memory of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95
PID 3140 wrote to memory of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95
PID 3140 wrote to memory of 2288	3140	c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe	95

C:\Users\Admin\AppData\Local\Temp\c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
"C:\Users\Admin\AppData\Local\Temp\c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe"
1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3140
- C:\Users\Admin\AppData\Local\Temp\c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe
  "C:\Users\Admin\AppData\Local\Temp\c192c16aba9f5bb5ce6eca9e5fff24bbc290e5b820f94868466a61f6d0a2df8e.exe"
  2⤵
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\BooConf.ini

Filesize
45B

MD5
8b9fc0443d7e48145e2d4b37afb2d37b

SHA1
64a5718a478a38ac262d2e46da81d0e88c122a0f

SHA256
4f743978ead44260f895c983689d718e31ca826161c447d205021a9d3e010afa

SHA512
5126da1d29f662465241c8b51b95783df3f88c8feb8bb1b65dcf354738c48aab4bfb6c0035dfe6b40fa03ae5aaba8f72f1c31343aec7d4edb9c6ebcc773cc3d3

Download Submit
C:\Users\Admin\AppData\Local\Temp\nszD206.tmp\System.dll

Filesize
11KB

MD5
c61501f07cf09bcfcdfe4cc8a1ebbbe3

SHA1
e8581b4359651b857646ae727efaaef372daa0fc

SHA256
7e75f148920db6300dad5a1c12fd5d6eecc95698a310a01311181bc98a704d55

SHA512
9837abe7ec3fa0f1f5193968d12b7ca1893e34eddf628db1f7ab6715b4de339231f0ec1b5f0f86c767f5a30c40da5c4a95e99deedd22eece93cb0d00539aad24

Download Submit
memory/2288-27-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2288-29-0x0000000001660000-0x0000000003926000-memory.dmp

Filesize
34.8MB

Download
memory/2288-36-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2288-37-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2288-38-0x0000000001660000-0x0000000003926000-memory.dmp

Filesize
34.8MB

Download
memory/2288-39-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/2288-40-0x0000000000400000-0x0000000001654000-memory.dmp

Filesize
18.3MB

Download
memory/3140-25-0x0000000004570000-0x0000000006836000-memory.dmp

Filesize
34.8MB

Download
memory/3140-26-0x0000000077361000-0x0000000077481000-memory.dmp

Filesize
1.1MB

Download
memory/3140-28-0x0000000004570000-0x0000000006836000-memory.dmp

Filesize
34.8MB

Download

Analysis

Sharing