nymaim | 72c53ebfe3c105afa5cf1d7caa1cfdd1b72788477403047ef512aa2fb826dad4

Analysis

max time kernel
145s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
14/10/2022, 01:02

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General

Target
file.exe
Size 2.4MB
Sample221014-bdsfpsbgf3
SHA256 72c53ebfe3c105afa5cf1d7caa1cfdd1b72788477403047ef512aa2fb826dad4
MD5 da8d3d906d09bcc4e2dc9f9307775248
SHA1 c98e2ce8191086fc1ebce73e8b30f3f77820f0ff
SHA512 d4777ec60a97d3fad459cd176e300e4dc6ec4b55c71a30c92b23aed50281bf92b30805c107af331d77099b95f95debf8d72ef414f6e2d20910a13e619b6549de
SSDEEP 49152:Z2nDTZCZKgaspS4wlWBP49HVuJ3wE9mJGYcZ3hGSn0jMj/I7m/A5hq:MnJwKKBPYGbhGS08I73Dq
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.15.156.54
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
4504	is-09J78.tmp
3480	dwsearcher47.exe
364	CaKd3.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	dwsearcher47.exe

Loads dropped DLL 1 IoCs

pid	Process
4504	is-09J78.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)\dwSearcher\unins000.dat	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-0872F.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-3MD9R.tmp	is-09J78.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\unins000.dat	is-09J78.tmp
File opened for modification	C:\Program Files (x86)\dwSearcher\dwsearcher47.exe	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-UCSNC.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-C0TVC.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-CRT2B.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-Q7C6B.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-KQ0CK.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-5VBGS.tmp	is-09J78.tmp
File created	C:\Program Files (x86)\dwSearcher\is-BP5L8.tmp	is-09J78.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
4956	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3480	dwsearcher47.exe
3480	dwsearcher47.exe
3480	dwsearcher47.exe
3480	dwsearcher47.exe
3480	dwsearcher47.exe
3480	dwsearcher47.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4956	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 488 wrote to memory of 4504	488	file.exe	84
PID 488 wrote to memory of 4504	488	file.exe	84
PID 488 wrote to memory of 4504	488	file.exe	84
PID 4504 wrote to memory of 3480	4504	is-09J78.tmp	85
PID 4504 wrote to memory of 3480	4504	is-09J78.tmp	85
PID 4504 wrote to memory of 3480	4504	is-09J78.tmp	85
PID 3480 wrote to memory of 364	3480	dwsearcher47.exe	86
PID 3480 wrote to memory of 364	3480	dwsearcher47.exe	86
PID 3480 wrote to memory of 364	3480	dwsearcher47.exe	86
PID 3480 wrote to memory of 4188	3480	dwsearcher47.exe	87
PID 3480 wrote to memory of 4188	3480	dwsearcher47.exe	87
PID 3480 wrote to memory of 4188	3480	dwsearcher47.exe	87
PID 4188 wrote to memory of 4956	4188	cmd.exe	89
PID 4188 wrote to memory of 4956	4188	cmd.exe	89
PID 4188 wrote to memory of 4956	4188	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:488
- C:\Users\Admin\AppData\Local\Temp\is-LF752.tmp\is-09J78.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-LF752.tmp\is-09J78.tmp" /SL4 $C0068 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2285063 52736
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4504
- - C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
    "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3480
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\CaKd3.exe
      4⤵
      Executes dropped EXE
      PID:364
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "dwsearcher47.exe" /f & erase "C:\Program Files (x86)\dwSearcher\dwsearcher47.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4188
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "dwsearcher47.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:4956

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

dwsearcher47.exe

Path C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
Size 4.0MB
SHA256 3ee85c136450c064fd896be2463ec723595a7e78ff3cd5e838d372f6b18f5fbb
MD5 17b57112fec73d0583335f47e0ff7e2d
SHA1 f553e607cfed25033a867cc4b20da70b6848e41b
SHA512 4e3086f771bb3aa1641f5e0217d8b5ad647538496b795636ef2b97cf84f1382a07200df709f80c48d98cf6ab5582c82d5f2d79ba653986053dd1fd8e6bf160c1
SSDEEP 49152:9GZb+GWYtvYtzYtFYtbYthYtGK6Qnbbgi9rncny20FEmT0Mx0lJ+OxVQOuq:9kb+Gq6QnbbgidcyhFdQMyKOxeOT
MD5 SHA1 SHA512 SSDEEP

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dwsearcher47.exe

Path C:\Program Files (x86)\dwSearcher\dwsearcher47.exe
Size 4.0MB
SHA256 3ee85c136450c064fd896be2463ec723595a7e78ff3cd5e838d372f6b18f5fbb
MD5 17b57112fec73d0583335f47e0ff7e2d
SHA1 f553e607cfed25033a867cc4b20da70b6848e41b
SHA512 4e3086f771bb3aa1641f5e0217d8b5ad647538496b795636ef2b97cf84f1382a07200df709f80c48d98cf6ab5582c82d5f2d79ba653986053dd1fd8e6bf160c1
SSDEEP 49152:9GZb+GWYtvYtzYtFYtbYthYtGK6Qnbbgi9rncny20FEmT0Mx0lJ+OxVQOuq:9kb+Gq6QnbbgidcyhFdQMyKOxeOT
MD5 SHA1 SHA512 SSDEEP

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_iscrypt.dll

Path C:\Users\Admin\AppData\Local\Temp\is-J6716.tmp\_isetup\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

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is-09J78.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LF752.tmp\is-09J78.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

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is-09J78.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-LF752.tmp\is-09J78.tmp
Size 657KB
SHA256 e82cabb027db8846c3430be760f137afa164c36f9e1b93a6e34c96de0b2c5a5f
MD5 7cd12c54a9751ca6eee6ab0c85fb68f5
SHA1 76562e9b7888b6d20d67addb5a90b68b54a51987
SHA512 27ba5d2f719aaac2ead6fb42f23af3aa866f75026be897cd2f561f3e383904e89e6043bd22b4ae24f69787bd258a68ff696c09c03d656cbf7c79c2a52d8d82cc
SSDEEP 12288:CkxzRCUn4rP/37YzHXA6/YUKsGjQNw4qpRRpDWowphIxz:ZFRCUn4rP/37YzHXA6QJsoPtIpqxz
MD5 SHA1 SHA512 SSDEEP

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CaKd3.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\CaKd3.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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CaKd3.exe

Path C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\CaKd3.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

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memory/488-134-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/488-156-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/488-132-0x0000000000400000-0x0000000000414000-memory.dmp

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memory/3480-143-0x0000000000400000-0x00000000015F9000-memory.dmp

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memory/3480-144-0x0000000000400000-0x00000000015F9000-memory.dmp

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memory/3480-142-0x0000000000400000-0x00000000015F9000-memory.dmp

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memory/3480-148-0x0000000010000000-0x000000001001B000-memory.dmp

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memory/3480-152-0x0000000000400000-0x00000000015F9000-memory.dmp

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memory/3480-155-0x0000000000400000-0x00000000015F9000-memory.dmp

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