urelas | 938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26b

General

Target

938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe
Size

59KB
MD5

1aaeba15a7030b2bc9de05e6f901d290
SHA1

2eed0b456247f0e5465dfc754614ea1c6fa1e6f4
SHA256

938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26b
SHA512

99d1f9a7736a1e11ff500bf3d89615ab1b9e205fc657073a4b67bf837f57d4e1e7a0fee19f5b62eaf5faf599125681b3d48f17579ce0be06e5e1ef842f1dcc7e
SSDEEP

1536:6W82C0Db1edMckBI1kmJAhTPY6pnouy8t:6n25DbaMySmJAhbvoutt

Score

10^/10

urelas discovery trojan upx

Malware Config

Extracted

Family

urelas

C2

218.54.47.76

218.54.47.77

218.54.47.74

Signatures

Urelas
Urelas is a trojan targeting card games.
trojan urelas
Urelas family
urelas

Deletes itself 1 IoCs

pid	Process
2704	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2820	biudfw.exe

Loads dropped DLL 1 IoCs

pid	Process
2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe

UPX packed file 8 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2244-0-0x0000000001080000-0x00000000010AC000-memory.dmp	upx
behavioral1/files/0x0034000000015c8b-4.dat	upx
behavioral1/memory/2244-6-0x0000000000610000-0x000000000063C000-memory.dmp	upx
behavioral1/memory/2820-10-0x0000000000800000-0x000000000082C000-memory.dmp	upx
behavioral1/memory/2244-19-0x0000000001080000-0x00000000010AC000-memory.dmp	upx
behavioral1/memory/2820-22-0x0000000000800000-0x000000000082C000-memory.dmp	upx
behavioral1/memory/2820-24-0x0000000000800000-0x000000000082C000-memory.dmp	upx
behavioral1/memory/2820-31-0x0000000000800000-0x000000000082C000-memory.dmp	upx

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 3 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	biudfw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2244 wrote to memory of 2820	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	30
PID 2244 wrote to memory of 2820	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	30
PID 2244 wrote to memory of 2820	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	30
PID 2244 wrote to memory of 2820	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	30
PID 2244 wrote to memory of 2704	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	31
PID 2244 wrote to memory of 2704	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	31
PID 2244 wrote to memory of 2704	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	31
PID 2244 wrote to memory of 2704	2244	938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe	31

C:\Users\Admin\AppData\Local\Temp\938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe
"C:\Users\Admin\AppData\Local\Temp\938a9946bd7de4609cf4fce1e7a818b55c5f29dd06c92d3519e6b8841582d26bN.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2244
- C:\Users\Admin\AppData\Local\Temp\biudfw.exe
  "C:\Users\Admin\AppData\Local\Temp\biudfw.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2820
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\sanfdr.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2704

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

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Downloads

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

Filesize
512B

MD5
b4a86880004da8726288d7ec954885a8

SHA1
1bab1cfbdc2c540246210bc7852f8fe7e8357b31

SHA256
c85016a9115aeb492bf116ab05791a9c3e6e30c39274767bd0476bd56a37db46

SHA512
22758f6c6de591c99f8f9857c1b03e55c242f0a4987d376b08c30bc608027d1574a228a8230099ddac2a3214663396b016e85d085204155a5ec26f87a28496b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\sanfdr.bat

Filesize
340B

MD5
360852114374a1aaf9b1703133c1c96a

SHA1
54da7f44e762fdd0ff73fc321ae39200ece18310

SHA256
5ca2fd22091daacdf4b31d62addae98c4087c9a7bc03aa8db92b023afaf3b491

SHA512
e78456e8aedcab934500af1d905f08e67af44ffce45bd2d042db9165ee14d30eee250c46dbe9964897c03a0a24b6e2e75324f9ed1361a3bc79658266fbf31e79

Download Submit
\Users\Admin\AppData\Local\Temp\biudfw.exe

Filesize
59KB

MD5
696307bc4fb13d2bccda6f56821e03f5

SHA1
f2a6fe45b558075250ef11e77208b8a1dcfe127d

SHA256
c563ee9e5a9722ff9e0b442da205d8b4114de9d21d461153df2e0aff1d08c4a4

SHA512
0bf873e7da3f01a80afbf66d6eb321f878d6abecb5f6e08f8d967191edbd724be77cb2cc1167acbd20b500025e9c0f7aba82a24eac85f23c156359fff1e9a02b

Download Submit
memory/2244-0-0x0000000001080000-0x00000000010AC000-memory.dmp

Filesize
176KB

Download
memory/2244-6-0x0000000000610000-0x000000000063C000-memory.dmp

Filesize
176KB

Download
memory/2244-19-0x0000000001080000-0x00000000010AC000-memory.dmp

Filesize
176KB

Download
memory/2820-10-0x0000000000800000-0x000000000082C000-memory.dmp

Filesize
176KB

Download
memory/2820-22-0x0000000000800000-0x000000000082C000-memory.dmp

Filesize
176KB

Download
memory/2820-24-0x0000000000800000-0x000000000082C000-memory.dmp

Filesize
176KB

Download
memory/2820-31-0x0000000000800000-0x000000000082C000-memory.dmp

Filesize
176KB

Download

Analysis

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