urelas | c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60

General

Target

c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe
Size

59KB
MD5

782f8cf518922c4ca35503fda848fb41
SHA1

80b6a19f18d5c41926bb2bbff057ba722d6a5614
SHA256

c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60
SHA512

c6ecb764cd6656eb24f8de645b3248d85bea5fca7cb3ac2e311349a3ac7f2cef5b52d7947f0049539eef7bbf278cfadd97843532bd1114aa055eca46b672c231
SSDEEP

1536:6W82C0Db1edMckBI1kmJAhTPY6pnouy8l:6n25DbaMySmJAhbvoutl

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
2108	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2756	biudfw.exe

Loads dropped DLL 1 IoCs

pid	Process
1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1792-0-0x00000000003A0000-0x00000000003CC000-memory.dmp	upx
behavioral1/files/0x00350000000186dd-4.dat	upx
behavioral1/memory/2756-16-0x0000000001180000-0x00000000011AC000-memory.dmp	upx
behavioral1/memory/1792-19-0x00000000003A0000-0x00000000003CC000-memory.dmp	upx
behavioral1/memory/2756-22-0x0000000001180000-0x00000000011AC000-memory.dmp	upx
behavioral1/memory/2756-24-0x0000000001180000-0x00000000011AC000-memory.dmp	upx
behavioral1/memory/2756-31-0x0000000001180000-0x00000000011AC000-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	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 2756	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	30
PID 1792 wrote to memory of 2756	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	30
PID 1792 wrote to memory of 2756	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	30
PID 1792 wrote to memory of 2756	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	30
PID 1792 wrote to memory of 2108	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	31
PID 1792 wrote to memory of 2108	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	31
PID 1792 wrote to memory of 2108	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	31
PID 1792 wrote to memory of 2108	1792	c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe	31

C:\Users\Admin\AppData\Local\Temp\c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe
"C:\Users\Admin\AppData\Local\Temp\c3d700c1e82511995368e16dafffd7aeab5a8274a31bc0471610d4d83d38df60.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1792
- 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:2756
- 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:2108

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
338B

MD5
af74a57a4b734acf261283a3784ed2f0

SHA1
8d5e530af96ec9ddd980fd2b30d1559bda055c6e

SHA256
319cffdf83d7cca2cff45ad23e68377f17be3481fd77b47b19d6150299f12582

SHA512
3f1db4fc35aa2fa8ae51239c94914e0c2c5eb461ee0ad4099dc3664d03eacdc1a25d24c945e00f5bc388a66f6acc4b93cd6e17fd2b4d2f713e640513fe7d098e

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

Filesize
59KB

MD5
c3e25ec12f555e8119d3f40fabfe8d1c

SHA1
9cbb458ea40757f4355b7c8807732c2e3a47be6f

SHA256
92476ed70e02d6fe99763616cb674ec3c370e18ffcc925f150be8e31d839a298

SHA512
0321ea846480a6a81669d0a47b15a95c6473f40ae1ed9305995e34f9217d5c8f39b2164d3ae7fb2f754b37eb42ad2430f7b04a80f8c5dcf58b100cbb4f3cbd83

Download Submit
memory/1792-0-0x00000000003A0000-0x00000000003CC000-memory.dmp

Filesize
176KB

Download
memory/1792-8-0x0000000001D50000-0x0000000001D7C000-memory.dmp

Filesize
176KB

Download
memory/1792-19-0x00000000003A0000-0x00000000003CC000-memory.dmp

Filesize
176KB

Download
memory/2756-16-0x0000000001180000-0x00000000011AC000-memory.dmp

Filesize
176KB

Download
memory/2756-22-0x0000000001180000-0x00000000011AC000-memory.dmp

Filesize
176KB

Download
memory/2756-24-0x0000000001180000-0x00000000011AC000-memory.dmp

Filesize
176KB

Download
memory/2756-31-0x0000000001180000-0x00000000011AC000-memory.dmp

Filesize
176KB

Download

Analysis

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