nymaim | a14479ff1d8873ab94779440ba6b8d0e56cb9b5e93da7eaa2a652a4a88c4fbaa

General

Target

file.exe
Size

2.3MB
MD5

a73a7d1b1417c9946d6df68357569408
SHA1

b1c6268707e8a42b2cf7c0dc241e4cf948f58682
SHA256

a14479ff1d8873ab94779440ba6b8d0e56cb9b5e93da7eaa2a652a4a88c4fbaa
SHA512

19cab071f5d06d265f0a61f413e16df1359c53bd674f5035eb13001f5194a6f2c360c6507d0d336cdd9c6088fd87a82cef0422a958e6d4ea8ef271cb4d10b1ef
SSDEEP

49152:Z2U5HtxSmjsQOD3xM32ymcDwwPI/oa5VNdh1A5hq:MUEmf7329z8IgUVNdADq

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
3752	is-5HMQO.tmp
2012	evsearcher59.exe
2396	P0s7RW8FWO.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	evsearcher59.exe

Loads dropped DLL 1 IoCs

pid	Process
3752	is-5HMQO.tmp

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

Drops file in Program Files directory 12 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\evSearcher\is-T843Q.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\unins000.dat	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-0UR8L.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-B2J18.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-OCOSE.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-JT95J.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-2D1PJ.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-KS8SV.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-2HGA1.tmp	is-5HMQO.tmp
File created	C:\Program Files (x86)\evSearcher\is-1DGOK.tmp	is-5HMQO.tmp
File opened for modification	C:\Program Files (x86)\evSearcher\unins000.dat	is-5HMQO.tmp
File opened for modification	C:\Program Files (x86)\evSearcher\evsearcher59.exe	is-5HMQO.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
4600	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2012	evsearcher59.exe
2012	evsearcher59.exe
2012	evsearcher59.exe
2012	evsearcher59.exe
2012	evsearcher59.exe
2012	evsearcher59.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4600	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3060 wrote to memory of 3752	3060	file.exe	82
PID 3060 wrote to memory of 3752	3060	file.exe	82
PID 3060 wrote to memory of 3752	3060	file.exe	82
PID 3752 wrote to memory of 2012	3752	is-5HMQO.tmp	83
PID 3752 wrote to memory of 2012	3752	is-5HMQO.tmp	83
PID 3752 wrote to memory of 2012	3752	is-5HMQO.tmp	83
PID 2012 wrote to memory of 2396	2012	evsearcher59.exe	86
PID 2012 wrote to memory of 2396	2012	evsearcher59.exe	86
PID 2012 wrote to memory of 2396	2012	evsearcher59.exe	86
PID 2012 wrote to memory of 1344	2012	evsearcher59.exe	92
PID 2012 wrote to memory of 1344	2012	evsearcher59.exe	92
PID 2012 wrote to memory of 1344	2012	evsearcher59.exe	92
PID 1344 wrote to memory of 4600	1344	cmd.exe	94
PID 1344 wrote to memory of 4600	1344	cmd.exe	94
PID 1344 wrote to memory of 4600	1344	cmd.exe	94

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Users\Admin\AppData\Local\Temp\is-JLMVK.tmp\is-5HMQO.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-JLMVK.tmp\is-5HMQO.tmp" /SL4 $A005A "C:\Users\Admin\AppData\Local\Temp\file.exe" 2201884 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:3752
- - C:\Program Files (x86)\evSearcher\evsearcher59.exe
    "C:\Program Files (x86)\evSearcher\evsearcher59.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:2012
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\P0s7RW8FWO.exe
      4⤵
      Executes dropped EXE
      PID:2396
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "evsearcher59.exe" /f & erase "C:\Program Files (x86)\evSearcher\evsearcher59.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1344
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "evsearcher59.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4600

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\evSearcher\evsearcher59.exe

Filesize
3.3MB

MD5
66480551c61ebc42d3fefbaa9de503c1

SHA1
9fcc89637a3d498c99d8907ee5a632a62a8365bd

SHA256
959929b13a38ca705b3a0ee43df828d4fdb5b227ebbac3048ff798ba00d10643

SHA512
7524b14b85ea5f3bff467e5f0717ec0a118197748d48aa019d39450574eb134b9e96fea845cf78473a70c88c5002963fd1e6a4afae8053be92c498b34d1198d8

Download Submit
C:\Program Files (x86)\evSearcher\evsearcher59.exe

Filesize
3.3MB

MD5
66480551c61ebc42d3fefbaa9de503c1

SHA1
9fcc89637a3d498c99d8907ee5a632a62a8365bd

SHA256
959929b13a38ca705b3a0ee43df828d4fdb5b227ebbac3048ff798ba00d10643

SHA512
7524b14b85ea5f3bff467e5f0717ec0a118197748d48aa019d39450574eb134b9e96fea845cf78473a70c88c5002963fd1e6a4afae8053be92c498b34d1198d8

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CV7E0.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JLMVK.tmp\is-5HMQO.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-JLMVK.tmp\is-5HMQO.tmp

Filesize
657KB

MD5
7cd12c54a9751ca6eee6ab0c85fb68f5

SHA1
76562e9b7888b6d20d67addb5a90b68b54a51987

SHA256
e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f

SHA512
27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\P0s7RW8FWO.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\P0s7RW8FWO.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2012-151-0x0000000000400000-0x000000000154B000-memory.dmp

Filesize
17.3MB

Download
memory/2012-142-0x0000000000400000-0x000000000154B000-memory.dmp

Filesize
17.3MB

Download
memory/2012-143-0x0000000000400000-0x000000000154B000-memory.dmp

Filesize
17.3MB

Download
memory/2012-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2012-154-0x0000000000400000-0x000000000154B000-memory.dmp

Filesize
17.3MB

Download
memory/3060-138-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-132-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3060-155-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

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